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DOE OSTI2020

Materials Data on Ho6Se11 by Materials Project

Ho6Se11 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty-four inequivalent Ho3+ sites. In the first Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.96–3.13 Å. In the second Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.95–3.00 Å. In the third Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.93–3.01 Å. In the fourth Ho3+ site, Ho3+ is bonded in a distorted pentagonal bipyramidal geometry to seven Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.87–2.98 Å. In the fifth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.92–2.99 Å. In the sixth Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.94–3.12 Å. In the seventh Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.92–3.13 Å. In the eighth Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.93–3.26 Å. In the ninth Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.92–3.06 Å. In the tenth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.95–2.97 Å. In the eleventh Ho3+ site, Ho3+ is bonded in a pentagonal bipyramidal geometry to seven Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.86–2.91 Å. In the twelfth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.93–3.07 Å. In the thirteenth Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.94–3.25 Å. In the fourteenth Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.94–3.20 Å. In the fifteenth Ho3+ site, Ho3+ is bonded in a pentagonal bipyramidal geometry to seven Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.85–2.93 Å. In the sixteenth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.92–3.01 Å. In the seventeenth Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.94–3.17 Å. In the eighteenth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.91–2.99 Å. In the nineteenth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.91–3.02 Å. In the twentieth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.91–3.03 Å. In the twenty-first Ho3+ site, Ho3+ is bonded in a 9-coordinate geometry to nine Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.95–3.12 Å. In the twenty-second Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.95–3.02 Å. In the twenty-third Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.92–3.04 Å. In the twenty-fourth Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight Se+1.64- atoms. There are a spread of Ho–Se bond distances ranging from 2.91–3.00 Å. There are forty-four inequivalent Se+1.64- sites. In the first Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the second Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the third Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the fourth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the fifth Se+1.64- site, Se+1.64- is bonded in a 5-coordinate geometry to five Ho3+ atoms. In the sixth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the seventh Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the eighth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to three Ho3+ and one Se+1.64- atom. The Se–Se bond length is 2.46 Å. In the ninth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the tenth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the eleventh Se+1.64- site, Se+1.64- is bonded in a 6-coordinate geometry to four Ho3+ atoms. In the twelfth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the thirteenth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ and one Se+1.64- atom. The Se–Se bond length is 2.86 Å. In the fourteenth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the fifteenth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the sixteenth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the seventeenth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the eighteenth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the nineteenth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the twentieth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the twenty-first Se+1.64- site, Se+1.64- is bonded in a 6-coordinate geometry to four Ho3+ and two Se+1.64- atoms. The Se–Se bond length is 2.52 Å. In the twenty-second Se+1.64- site, Se+1.64- is bonded in a 6-coordinate geometry to four Ho3+ atoms. In the twenty-third Se+1.64- site, Se+1.64- is bonded in a 2-coordinate geometry to four Ho3+ and one Se+1.64- atom. In the twenty-fourth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ and one Se+1.64- atom. The Se–Se bond length is 2.86 Å. In the twenty-fifth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the twenty-sixth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the twenty-seventh Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the twenty-eighth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the twenty-ninth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the thirtieth Se+1.64- site, Se+1.64- is bonded in a 5-coordinate geometry to five Ho3+ atoms. In the thirty-first Se+1.64- site, Se+1.64- is bonded in a 6-coordinate geometry to four Ho3+ and two Se+1.64- atoms. The Se–Se bond length is 2.52 Å. In the thirty-second Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the thirty-third Se+1.64- site, Se+1.64- is bonded in a 2-coordinate geometry to four Ho3+ and one Se+1.64- atom. In the thirty-fourth Se+1.64- site, Se+1.64- is bonded in a 6-coordinate geometry to four Ho3+ atoms. In the thirty-fifth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the thirty-sixth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the thirty-seventh Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the thirty-eighth Se+1.64- site, Se+1.64- is bonded in a 5-coordinate geometry to five Ho3+ atoms. In the thirty-ninth Se+1.64- site, Se+1.64- is bonded in a 5-coordinate geometry to five Ho3+ atoms. In the fortieth Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the forty-first Se+1.64- site, Se+1.64- is bonded to five Ho3+ atoms to form a mixture of distorted edge and corner-sharing SeHo5 trigonal bipyramids. In the forty-second Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the forty-third Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to four Ho3+ atoms. In the forty-fourth Se+1.64- site, Se+1.64- is bonded in a 4-coordinate geometry to three Ho3+ and one Se+1.64- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na2Ti2Se9 by Materials Project

Na2Ti2Se9 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are eight inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 2.99–3.26 Å. In the second Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 2.98–3.47 Å. In the third Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 2.91–3.46 Å. In the fourth Na1+ site, Na1+ is bonded in a 8-coordinate geometry to eight Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 3.09–3.56 Å. In the fifth Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 2.99–3.63 Å. In the sixth Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 3.06–3.43 Å. In the seventh Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 3.00–3.40 Å. In the eighth Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Se+1.11- atoms. There are a spread of Na–Se bond distances ranging from 3.01–3.37 Å. There are eight inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.51–2.78 Å. In the second Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.53–2.74 Å. In the third Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.52–2.76 Å. In the fourth Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.54–2.72 Å. In the fifth Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.51–2.76 Å. In the sixth Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.51–2.76 Å. In the seventh Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.54–2.71 Å. In the eighth Ti4+ site, Ti4+ is bonded to seven Se+1.11- atoms to form a mixture of distorted edge and face-sharing TiSe7 pentagonal bipyramids. There are a spread of Ti–Se bond distances ranging from 2.52–2.74 Å. There are thirty-six inequivalent Se+1.11- sites. In the first Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to two Na1+ and one Ti4+ atom. In the second Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Se+1.11- atom. The Se–Se bond length is 2.39 Å. In the third Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to one Na1+, two Ti4+, and one Se+1.11- atom. The Se–Se bond length is 2.41 Å. In the fourth Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to one Na1+ and two Ti4+ atoms. In the fifth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Na1+ and two Ti4+ atoms. In the sixth Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to two Na1+ and one Ti4+ atom. In the seventh Se+1.11- site, Se+1.11- is bonded in a distorted rectangular see-saw-like geometry to two Na1+ and two Ti4+ atoms. In the eighth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one Na1+ and one Ti4+ atom. In the ninth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Ti4+ atoms. In the tenth Se+1.11- site, Se+1.11- is bonded in a distorted trigonal bipyramidal geometry to three Na1+ and two Ti4+ atoms. In the eleventh Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to one Na1+ and two Ti4+ atoms. In the twelfth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Ti4+ and one Se+1.11- atom. The Se–Se bond length is 2.39 Å. In the thirteenth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one Na1+, two Ti4+, and one Se+1.11- atom. In the fourteenth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Se+1.11- atom. The Se–Se bond length is 2.41 Å. In the fifteenth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+ and one Ti4+ atom. In the sixteenth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one Na1+, two Ti4+, and one Se+1.11- atom. The Se–Se bond length is 2.39 Å. In the seventeenth Se+1.11- site, Se+1.11- is bonded in a 1-coordinate geometry to one Na1+, one Ti4+, and one Se+1.11- atom. In the eighteenth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Ti4+ atoms. In the nineteenth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Se+1.11- atom. The Se–Se bond length is 2.40 Å. In the twentieth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Se+1.11- atom. In the twenty-first Se+1.11- site, Se+1.11- is bonded in a distorted bent 120 degrees geometry to one Na1+ and one Ti4+ atom. In the twenty-second Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to two Na1+ and one Ti4+ atom. In the twenty-third Se+1.11- site, Se+1.11- is bonded in a rectangular see-saw-like geometry to two Na1+ and two Ti4+ atoms. In the twenty-fourth Se+1.11- site, Se+1.11- is bonded in a 1-coordinate geometry to two Na1+ and one Ti4+ atom. In the twenty-fifth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one Na1+, two Ti4+, and one Se+1.11- atom. In the twenty-sixth Se+1.11- site, Se+1.11- is bonded in a distorted single-bond geometry to one Ti4+ and one Se+1.11- atom. The Se–Se bond length is 2.41 Å. In the twenty-seventh Se+1.11- site, Se+1.11- is bonded in a distorted rectangular see-saw-like geometry to two Na1+ and two Ti4+ atoms. In the twenty-eighth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Se+1.11- atom. In the twenty-ninth Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to two Na1+ and one Ti4+ atom. In the thirtieth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Ti4+ and one Se+1.11- atom. In the thirty-first Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Ti4+ atoms. In the thirty-second Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Ti4+ atoms. In the thirty-third Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to one Na1+, two Ti4+, and one Se+1.11- atom. In the thirty-fourth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Na1+, one Ti4+, and one Se+1.11- atom. The Se–Se bond length is 2.39 Å. In the thirty-fifth Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to two Na1+, two Ti4+, and one Se+1.11- atom. In the thirty-sixth Se+1.11- site, Se+1.11- is bonded in a 3-coordinate geometry to one Na1+ and two Ti4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y7Cu3(GeSe7)3 by Materials Project

Y7Cu3(GeSe7)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are fourteen inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.84–3.36 Å. In the second Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.89–3.35 Å. In the third Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.86–3.34 Å. In the fourth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.87–3.33 Å. In the fifth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.87–3.44 Å. In the sixth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.84–3.39 Å. In the seventh Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.86–3.34 Å. In the eighth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.86–3.38 Å. In the ninth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.85–3.36 Å. In the tenth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.87–3.44 Å. In the eleventh Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.88–3.29 Å. In the twelfth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.87–3.33 Å. In the thirteenth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.87–3.33 Å. In the fourteenth Y3+ site, Y3+ is bonded in a 8-coordinate geometry to eight Se+1.71- atoms. There are a spread of Y–Se bond distances ranging from 2.88–3.38 Å. There are six inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded in a trigonal planar geometry to three Se+1.71- atoms. There are a spread of Cu–Se bond distances ranging from 2.32–2.37 Å. In the second Cu1+ site, Cu1+ is bonded in a trigonal planar geometry to three Se+1.71- atoms. There are a spread of Cu–Se bond distances ranging from 2.34–2.37 Å. In the third Cu1+ site, Cu1+ is bonded in a trigonal planar geometry to three Se+1.71- atoms. There are a spread of Cu–Se bond distances ranging from 2.32–2.36 Å. In the fourth Cu1+ site, Cu1+ is bonded in a trigonal planar geometry to three Se+1.71- atoms. There are one shorter (2.35 Å) and two longer (2.36 Å) Cu–Se bond lengths. In the fifth Cu1+ site, Cu1+ is bonded in a trigonal planar geometry to three Se+1.71- atoms. There are a spread of Cu–Se bond distances ranging from 2.32–2.36 Å. In the sixth Cu1+ site, Cu1+ is bonded in a trigonal planar geometry to three Se+1.71- atoms. There are two shorter (2.33 Å) and one longer (2.37 Å) Cu–Se bond lengths. There are six inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Se+1.71- atoms. There are a spread of Ge–Se bond distances ranging from 2.37–2.42 Å. In the second Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Se+1.71- atoms. There are a spread of Ge–Se bond distances ranging from 2.37–2.42 Å. In the third Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Se+1.71- atoms. There are a spread of Ge–Se bond distances ranging from 2.35–2.42 Å. In the fourth Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Se+1.71- atoms. There are a spread of Ge–Se bond distances ranging from 2.37–2.43 Å. In the fifth Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Se+1.71- atoms. There are a spread of Ge–Se bond distances ranging from 2.35–2.41 Å. In the sixth Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four Se+1.71- atoms. There are a spread of Ge–Se bond distances ranging from 2.37–2.41 Å. There are forty-two inequivalent Se+1.71- sites. In the first Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the second Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the third Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the fourth Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the fifth Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the sixth Se+1.71- site, Se+1.71- is bonded in an L-shaped geometry to one Y3+ and one Ge4+ atom. In the seventh Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the eighth Se+1.71- site, Se+1.71- is bonded in an L-shaped geometry to one Y3+ and one Ge4+ atom. In the ninth Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the tenth Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the eleventh Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the twelfth Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the thirteenth Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the fourteenth Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the fifteenth Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the sixteenth Se+1.71- site, Se+1.71- is bonded in a 3-coordinate geometry to two Y3+ and one Ge4+ atom. In the seventeenth Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the eighteenth Se+1.71- site, Se+1.71- is bonded in a distorted rectangular see-saw-like geometry to three Y3+ and one Ge4+ atom. In the nineteenth Se+1.71- site, Se+1.71- is bonded in a trigonal non-coplanar geometry to two Y3+ and one Ge4+ atom. In the twentieth Se+1.71- site, Se+1.71- is bonded in a tetrahedral geometry to three Y3+ and one Ge4+ atom. In the twenty-first Se+1.71- site, Se+1.71- is bonded in a trigonal non-coplanar geometry to two Y3+ and one Ge4+ atom. In the twenty-second Se+1.71- site, Se+1.71- is bonded in a tetrahedral geometry to three Y3+ and one Ge4+ atom. In the twenty-third Se+1.71- site, Se+1.71- is bonded in a trigonal non-coplanar geometry to two Y3+ and one Ge4+ atom. In the twenty-fourth Se+1.71- site, Se+1.71- is bonded in a trigonal non-coplanar geometry to two Y3+ and one Ge4+ atom. In the twenty-fifth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the twenty-sixth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the twenty-seventh Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the twenty-eighth Se+1.71- site, Se+1.71- is bonded in a 1-coordinate geometry to four Y3+ and one Cu1+ atom. In the twenty-ninth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirtieth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-first Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-second Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-third Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-fourth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-fifth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-sixth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-seventh Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the thirty-eighth Se+1.71- site, Se+1.71- is bonded in a 1-coordinate geometry to four Y3+ and one Cu1+ atom. In the thirty-ninth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the fortieth Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the forty-first Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom. In the forty-second Se+1.71- site, Se+1.71- is bonded in a 4-coordinate geometry to three Y3+ and one Cu1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb6Ga10Se20O61 by Materials Project

Rb6Ga10Se20O61 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are six inequivalent Rb sites. In the first Rb site, Rb is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Rb–O bond distances ranging from 2.91–3.38 Å. In the second Rb site, Rb is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Rb–O bond distances ranging from 2.91–3.38 Å. In the third Rb site, Rb is bonded in a 12-coordinate geometry to twelve O atoms. There are a spread of Rb–O bond distances ranging from 3.21–3.59 Å. In the fourth Rb site, Rb is bonded in a 12-coordinate geometry to twelve O atoms. There are a spread of Rb–O bond distances ranging from 3.19–3.59 Å. In the fifth Rb site, Rb is bonded in a 8-coordinate geometry to one Se and seven O atoms. The Rb–Se bond length is 3.61 Å. There are a spread of Rb–O bond distances ranging from 2.84–3.33 Å. In the sixth Rb site, Rb is bonded in a 9-coordinate geometry to one Se and eight O atoms. The Rb–Se bond length is 3.60 Å. There are a spread of Rb–O bond distances ranging from 2.82–3.49 Å. There are ten inequivalent Ga sites. In the first Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.96–2.05 Å. In the second Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.96–2.06 Å. In the third Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.98–2.04 Å. In the fourth Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.98–2.05 Å. In the fifth Ga site, Ga is bonded in a tetrahedral geometry to four O atoms. There is three shorter (1.87 Å) and one longer (1.88 Å) Ga–O bond length. In the sixth Ga site, Ga is bonded in a tetrahedral geometry to four O atoms. There is three shorter (1.87 Å) and one longer (1.88 Å) Ga–O bond length. In the seventh Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.96–2.03 Å. In the eighth Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.96–2.03 Å. In the ninth Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.97–2.05 Å. In the tenth Ga site, Ga is bonded in an octahedral geometry to six O atoms. There are a spread of Ga–O bond distances ranging from 1.97–2.05 Å. There are twenty inequivalent Se sites. In the first Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.72 Å) and one longer (1.79 Å) Se–O bond length. In the second Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.71–1.79 Å. In the third Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.68–1.73 Å. In the fourth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.66–1.73 Å. In the fifth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three O atoms. There is two shorter (1.72 Å) and one longer (1.74 Å) Se–O bond length. In the sixth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three O atoms. There is one shorter (1.72 Å) and two longer (1.73 Å) Se–O bond length. In the seventh Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.71 Å) and one longer (1.79 Å) Se–O bond length. In the eighth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.71 Å) and one longer (1.78 Å) Se–O bond length. In the ninth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.73 Å) and one longer (1.77 Å) Se–O bond length. In the tenth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.73 Å) and one longer (1.77 Å) Se–O bond length. In the eleventh Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.72 Å) and one longer (1.77 Å) Se–O bond length. In the twelfth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is two shorter (1.72 Å) and one longer (1.77 Å) Se–O bond length. In the thirteenth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.73–1.76 Å. In the fourteenth Se site, Se is bonded in a distorted T-shaped geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.73–1.76 Å. In the fifteenth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to one Rb and three O atoms. There is one shorter (1.72 Å) and two longer (1.73 Å) Se–O bond length. In the sixteenth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to one Rb and three O atoms. All Se–O bond lengths are 1.73 Å. In the seventeenth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is one shorter (1.73 Å) and two longer (1.74 Å) Se–O bond length. In the eighteenth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There is one shorter (1.73 Å) and two longer (1.74 Å) Se–O bond length. In the nineteenth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. All Se–O bond lengths are 1.73 Å. In the twentieth Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. All Se–O bond lengths are 1.73 Å. There are sixty-one inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the third O site, O is bonded in a 2-coordinate geometry to one Rb, one Ga, and one Se atom. In the fourth O site, O is bonded in a 2-coordinate geometry to one Rb, one Ga, and one Se atom. In the fifth O site, O is bonded in a bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the sixth O site, O is bonded in a bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the seventh O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the eighth O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the ninth O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Ga, and one Se atom. In the tenth O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Ga, and one Se atom. In the eleventh O site, O is bonded in a single-bond geometry to one Se atom. In the twelfth O site, O is bonded in a single-bond geometry to one Se atom. In the thirteenth O site, O is bonded in a distorted bent 120 degrees geometry to one Ga and one Se atom. In the fourteenth O site, O is bonded in a distorted bent 120 degrees geometry to one Ga and one Se atom. In the fifteenth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the sixteenth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the seventeenth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the eighteenth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the nineteenth O site, O is bonded in a distorted bent 120 degrees geometry to two Rb, one Ga, and one Se atom. In the twentieth O site, O is bonded in a distorted bent 120 degrees geometry to two Rb, one Ga, and one Se atom. In the twenty-first O site, O is bonded in a distorted bent 120 degrees geometry to one Rb and one Se atom. In the twenty-second O site, O is bonded in a distorted bent 120 degrees geometry to one Rb and one Se atom. In the twenty-third O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Ga, and one Se atom. In the twenty-fourth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the twenty-fifth O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Ga, and one Se atom. In the twenty-sixth O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Ga, and one Se atom. In the twenty-seventh O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the twenty-eighth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the twenty-ninth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirtieth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-first O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the thirty-second O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the thirty-third O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-fourth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-fifth O site, O is bonded in a bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-sixth O site, O is bonded in a bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-seventh O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-eighth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the thirty-ninth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the fortieth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the forty-first O site, O is bonded in a distorted bent 120 degrees geometry to two Rb, one Ga, and one Se atom. In the forty-second O site, O is bonded in a distorted bent 120 degrees geometry to two Rb, one Ga, and one Se atom. In the forty-third O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the forty-fourth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the forty-fifth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the forty-sixth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the forty-seventh O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the forty-eighth O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the forty-ninth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the fiftieth O site, O is bonded in a distorted bent 120 degrees geometry to one Rb, one Ga, and one Se atom. In the fifty-first O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the fifty-second O site, O is bonded in a bent 120 degrees geometry to one Ga and one Se atom. In the fifty-third O site, O is bonded in a distorted bent 120 degrees geometry to two Rb, one Ga, and one Se atom. In the fifty-fourth O site, O is bonded in a distorted bent 120 degrees geometry to two Rb, one Ga, and one Se atom. In the fifty-fifth O site, O is bonded in a distorted trigonal planar geometry to one Rb, one Ga, and one Se atom. In the fifty-sixth O site, O is bonded in a distorted trigonal planar geometry to one Rb,

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm23Se32 by Materials Project

Tm23Se32 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty-three inequivalent Tm sites. In the first Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–4°. There are a spread of Tm–Se bond distances ranging from 2.77–2.94 Å. In the second Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are a spread of Tm–Se bond distances ranging from 2.76–2.86 Å. In the third Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–5°. There are a spread of Tm–Se bond distances ranging from 2.78–2.87 Å. In the fourth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are a spread of Tm–Se bond distances ranging from 2.74–2.88 Å. In the fifth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–6°. There are a spread of Tm–Se bond distances ranging from 2.77–2.91 Å. In the sixth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 3–5°. There are a spread of Tm–Se bond distances ranging from 2.73–2.88 Å. In the seventh Tm site, Tm is bonded to six Se atoms to form edge-sharing TmSe6 octahedra. There are a spread of Tm–Se bond distances ranging from 2.75–2.90 Å. In the eighth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 3–5°. There are a spread of Tm–Se bond distances ranging from 2.78–2.91 Å. In the ninth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Tm–Se bond distances ranging from 2.81–2.85 Å. In the tenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 3–4°. There are a spread of Tm–Se bond distances ranging from 2.79–2.90 Å. In the eleventh Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–4°. There are a spread of Tm–Se bond distances ranging from 2.75–2.92 Å. In the twelfth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 3–4°. There are a spread of Tm–Se bond distances ranging from 2.77–2.95 Å. In the thirteenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–4°. There are a spread of Tm–Se bond distances ranging from 2.80–2.83 Å. In the fourteenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 2–4°. There are a spread of Tm–Se bond distances ranging from 2.79–2.94 Å. In the fifteenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are a spread of Tm–Se bond distances ranging from 2.74–2.89 Å. In the sixteenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are a spread of Tm–Se bond distances ranging from 2.81–2.87 Å. In the seventeenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–5°. There are a spread of Tm–Se bond distances ranging from 2.77–2.90 Å. In the eighteenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedral tilt angles are 2°. There are a spread of Tm–Se bond distances ranging from 2.74–2.88 Å. In the nineteenth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–5°. There are a spread of Tm–Se bond distances ranging from 2.75–2.91 Å. In the twentieth Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–6°. There are a spread of Tm–Se bond distances ranging from 2.79–2.89 Å. In the twenty-first Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 2–5°. There are a spread of Tm–Se bond distances ranging from 2.79–2.90 Å. In the twenty-second Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are a spread of Tm–Se bond distances ranging from 2.82–2.85 Å. In the twenty-third Tm site, Tm is bonded to six Se atoms to form a mixture of edge and corner-sharing TmSe6 octahedra. The corner-sharing octahedra tilt angles range from 1–4°. There are a spread of Tm–Se bond distances ranging from 2.79–2.90 Å. There are thirty-two inequivalent Se sites. In the first Se site, Se is bonded in a distorted T-shaped geometry to three Tm atoms. In the second Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the third Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the fourth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the fifth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the sixth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the seventh Se site, Se is bonded to five Tm atoms to form a mixture of edge and corner-sharing SeTm5 square pyramids. In the eighth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the ninth Se site, Se is bonded in a T-shaped geometry to three Tm atoms. In the tenth Se site, Se is bonded to five Tm atoms to form a mixture of edge and corner-sharing SeTm5 square pyramids. In the eleventh Se site, Se is bonded to five Tm atoms to form a mixture of edge and corner-sharing SeTm5 square pyramids. In the twelfth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the thirteenth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the fourteenth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the fifteenth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the sixteenth Se site, Se is bonded to five Tm atoms to form SeTm5 square pyramids that share a cornercorner with one SeTm6 octahedra and an edgeedge with one SeTm5 square pyramid. The corner-sharing octahedral tilt angles are 4°. In the seventeenth Se site, Se is bonded to six Tm atoms to form a mixture of edge and corner-sharing SeTm6 octahedra. In the eighteenth Se site, Se is bonded to five Tm atoms to form SeTm5 square pyramids that share corners with four equivalent SeTm5 square pyramids, edges with two equivalent SeTm6 octahedra, and edges with four SeTm5 square pyramids. In the nineteenth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the twentieth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the twenty-first Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the twenty-second Se site, Se is bonded to five Tm atoms to form SeTm5 square pyramids that share corners with three SeTm5 square pyramids, an edgeedge with one SeTm6 octahedra, and edges with three SeTm5 square pyramids. In the twenty-third Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the twenty-fourth Se site, Se is bonded to five Tm atoms to form SeTm5 square pyramids that share corners with three SeTm5 square pyramids, an edgeedge with one SeTm6 octahedra, and edges with three SeTm5 square pyramids. In the twenty-fifth Se site, Se is bonded to five Tm atoms to form a mixture of edge and corner-sharing SeTm5 square pyramids. In the twenty-sixth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the twenty-seventh Se site, Se is bonded to five Tm atoms to form a mixture of edge and corner-sharing SeTm5 square pyramids. In the twenty-eighth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the twenty-ninth Se site, Se is bonded to five Tm atoms to form SeTm5 square pyramids that share corners with four equivalent SeTm5 square pyramids, edges with two equivalent SeTm6 octahedra, and edges with four SeTm5 square pyramids. In the thirtieth Se site, Se is bonded in a rectangular see-saw-like geometry to four Tm atoms. In the thirty-first Se site, Se is bonded to five Tm atoms to form SeTm5 square pyramids that share corners with four equivalent SeTm6 octahedra, corners with two SeTm5 square pyramids, and edges with four SeTm5 square pyramids. The corner-sharing octahedra tilt angles range from 3–4°. In the thirty-second Se site, Se is bonded in a distorted T-shaped geometry to three Tm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm31(CuSe16)3 by Materials Project

Sm31(CuSe16)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are thirty-one inequivalent Sm sites. In the first Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.18 Å. In the second Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.35 Å. In the third Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.31 Å. In the fourth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.45 Å. In the fifth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.35 Å. In the sixth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.29 Å. In the seventh Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.21 Å. In the eighth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.43 Å. In the ninth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.41 Å. In the tenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.34 Å. In the eleventh Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.93–3.40 Å. In the twelfth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.21 Å. In the thirteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.22 Å. In the fourteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.42 Å. In the fifteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.30 Å. In the sixteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.21 Å. In the seventeenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.95–3.30 Å. In the eighteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.18 Å. In the nineteenth Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.92–3.23 Å. In the twentieth Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.24 Å. In the twenty-first Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.93–3.21 Å. In the twenty-second Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.18 Å. In the twenty-third Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.35 Å. In the twenty-fourth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.29 Å. In the twenty-fifth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.37 Å. In the twenty-sixth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.94–3.36 Å. In the twenty-seventh Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.28 Å. In the twenty-eighth Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.91–3.22 Å. In the twenty-ninth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.20 Å. In the thirtieth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.42 Å. In the thirty-first Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.24 Å. There are three inequivalent Cu sites. In the first Cu site, Cu is bonded in a distorted rectangular see-saw-like geometry to four Se atoms. There are a spread of Cu–Se bond distances ranging from 2.63–2.93 Å. In the second Cu site, Cu is bonded in a distorted square co-planar geometry to four Se atoms. There are a spread of Cu–Se bond distances ranging from 2.62–2.94 Å. In the third Cu site, Cu is bonded in a distorted rectangular see-saw-like geometry to four Se atoms. There are a spread of Cu–Se bond distances ranging from 2.67–2.85 Å. There are forty-eight inequivalent Se sites. In the first Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with four SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 46–48°. In the second Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with six SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the third Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with six SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the fourth Se site, Se is bonded in a 5-coordinate geometry to five Sm atoms. In the fifth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with four SeSm5Cu octahedra, corners with six SeSm5 square pyramids, edges with two SeSm5Cu octahedra, edges with three SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 42–86°. In the sixth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with seven SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with three SeSm5 square pyramids, and a faceface with one SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 22–87°. In the seventh Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with eight SeSm5Cu octahedra, corners with seven SeSm5 square pyramids, edges with five SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm6 octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the eighth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with six SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and a faceface with one SeSm5 square pyramid. The corner-sharing octahedra tilt angles range from 17–48°. In the ninth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with seven SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 16–48°. In the tenth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with eight SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with five SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 21–87°. In the eleventh Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with eight SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with three SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 20–89°. In the twelfth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with eight SeSm5Cu octahedra, corners with four SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with four SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 22–87°. In the thirteenth Se site, Se is bonded to five Sm atoms to form SeSm5 square pyramids that share corners with eight SeSm6 octahedra, corners with five SeSm5 square pyramids, edges with two SeSm6 octahedra, edges with six SeSm5 square pyramids, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 19–52°. In the fourteenth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with eight SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and a faceface with one SeSm5 square pyramid. The corner-sharing octahedra tilt angles range from 17–48°. In the fifteenth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with six SeSm5Cu octahedra, corners with two SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with four SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 20–51°. In the sixteenth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with seven SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the seventeenth Se site, Se is bonded to six Sm atoms to form distorted SeSm6 octahedra that share corners with eight SeSm6 octahedra, corners with seven SeSm5 square pyramids, edges with three SeSm6 octahedra, edges with three SeSm5 square pyramids, faces with two SeSm6 octahedra, and faces with three

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hf23Se25 by Materials Project

Hf23Se25 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty-three inequivalent Hf sites. In the first Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.70–2.76 Å. In the second Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.72–2.75 Å. In the third Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.75 Å. In the fourth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.77 Å. In the fifth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.70–2.78 Å. In the sixth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.77 Å. In the seventh Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.79 Å. In the eighth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.72–2.74 Å. In the ninth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.70–2.76 Å. In the tenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.76 Å. In the eleventh Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.70–2.75 Å. In the twelfth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.77 Å. In the thirteenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.70–2.75 Å. In the fourteenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.75 Å. In the fifteenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.72–2.75 Å. In the sixteenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.72–2.74 Å. In the seventeenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.75 Å. In the eighteenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.70–2.77 Å. In the nineteenth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.72–2.74 Å. In the twentieth Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.74 Å. In the twenty-first Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.74 Å. In the twenty-second Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.75 Å. In the twenty-third Hf site, Hf is bonded to six Se atoms to form a mixture of distorted corner, edge, and face-sharing HfSe6 pentagonal pyramids. There are a spread of Hf–Se bond distances ranging from 2.69–2.76 Å. There are twenty-five inequivalent Se sites. In the first Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with five SeHf6 pentagonal pyramids, edges with three SeHf6 pentagonal pyramids, an edgeedge with one SeHf5 trigonal bipyramid, and a faceface with one SeHf6 pentagonal pyramid. In the second Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the third Se site, Se is bonded to six Hf atoms to form a mixture of distorted corner, edge, and face-sharing SeHf6 pentagonal pyramids. In the fourth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with five SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with two SeHf6 pentagonal pyramids, and faces with two SeHf6 pentagonal pyramids. In the fifth Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the sixth Se site, Se is bonded to six Hf atoms to form a mixture of distorted corner, edge, and face-sharing SeHf6 pentagonal pyramids. In the seventh Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the eighth Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the ninth Se site, Se is bonded to six Hf atoms to form a mixture of distorted corner, edge, and face-sharing SeHf6 pentagonal pyramids. In the tenth Se site, Se is bonded to six Hf atoms to form a mixture of distorted corner, edge, and face-sharing SeHf6 pentagonal pyramids. In the eleventh Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the twelfth Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the thirteenth Se site, Se is bonded to five Hf atoms to form distorted SeHf5 trigonal bipyramids that share corners with seven SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with four SeHf6 pentagonal pyramids, and a faceface with one SeHf6 pentagonal pyramid. In the fourteenth Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the fifteenth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with five SeHf6 pentagonal pyramids, corners with two equivalent SeHf5 trigonal bipyramids, edges with three SeHf6 pentagonal pyramids, and a faceface with one SeHf6 pentagonal pyramid. In the sixteenth Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the seventeenth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with five SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with three SeHf6 pentagonal pyramids, edges with two SeHf5 trigonal bipyramids, and faces with two SeHf6 pentagonal pyramids. In the eighteenth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with six SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with three SeHf6 pentagonal pyramids, edges with two SeHf5 trigonal bipyramids, and a faceface with one SeHf6 pentagonal pyramid. In the nineteenth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with seven SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with three SeHf6 pentagonal pyramids, an edgeedge with one SeHf5 trigonal bipyramid, a faceface with one SeHf6 pentagonal pyramid, and a faceface with one SeHf5 trigonal bipyramid. In the twentieth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with six SeHf6 pentagonal pyramids, corners with two SeHf5 trigonal bipyramids, edges with two SeHf6 pentagonal pyramids, an edgeedge with one SeHf5 trigonal bipyramid, and faces with two SeHf6 pentagonal pyramids. In the twenty-first Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with six SeHf6 pentagonal pyramids, corners with four SeHf5 trigonal bipyramids, edges with three SeHf6 pentagonal pyramids, and faces with two SeHf6 pentagonal pyramids. In the twenty-second Se site, Se is bonded to five Hf atoms to form distorted SeHf5 trigonal bipyramids that share corners with six SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with four SeHf6 pentagonal pyramids, and a faceface with one SeHf6 pentagonal pyramid. In the twenty-third Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms. In the twenty-fourth Se site, Se is bonded to six Hf atoms to form distorted SeHf6 pentagonal pyramids that share corners with seven SeHf6 pentagonal pyramids, a cornercorner with one SeHf5 trigonal bipyramid, edges with three SeHf6 pentagonal pyramids, an edgeedge with one SeHf5 trigonal bipyramid, a faceface with one SeHf6 pentagonal pyramid, and a faceface with one SeHf5 trigonal bipyramid. In the twenty-fifth Se site, Se is bonded in a distorted pentagonal planar geometry to five Hf atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W2Se17Cl12 by Materials Project

W2Se17Cl12 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one W2Se17Cl12 sheet oriented in the (0, 1, 0) direction. there are two inequivalent W6+ sites. In the first W6+ site, W6+ is bonded in an octahedral geometry to six Cl1- atoms. There are four shorter (2.34 Å) and two longer (2.37 Å) W–Cl bond lengths. In the second W6+ site, W6+ is bonded in an octahedral geometry to six Cl1- atoms. There are a spread of W–Cl bond distances ranging from 2.32–2.40 Å. There are seventeen inequivalent Se sites. In the first Se site, Se is bonded in a distorted water-like geometry to two Se atoms. There are one shorter (2.32 Å) and one longer (2.46 Å) Se–Se bond lengths. In the second Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.39 Å. In the third Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.33 Å. In the fourth Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.41 Å. In the fifth Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.28 Å. In the sixth Se site, Se is bonded in a 4-coordinate geometry to two Se and two Cl1- atoms. The Se–Se bond length is 2.56 Å. There are one shorter (3.60 Å) and one longer (3.62 Å) Se–Cl bond lengths. In the seventh Se site, Se is bonded in a 4-coordinate geometry to three Se and one Cl1- atom. The Se–Se bond length is 2.39 Å. The Se–Cl bond length is 3.51 Å. In the eighth Se site, Se is bonded in a T-shaped geometry to two Se and one Cl1- atom. The Se–Se bond length is 2.36 Å. The Se–Cl bond length is 3.46 Å. In the ninth Se site, Se is bonded in a T-shaped geometry to two Se and one Cl1- atom. The Se–Se bond length is 2.35 Å. The Se–Cl bond length is 3.37 Å. In the tenth Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.39 Å. In the eleventh Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Se atoms. There are one shorter (2.46 Å) and one longer (2.56 Å) Se–Se bond lengths. In the twelfth Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.28 Å. In the thirteenth Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.40 Å. In the fourteenth Se site, Se is bonded in a water-like geometry to two Se atoms. The Se–Se bond length is 2.34 Å. In the fifteenth Se site, Se is bonded in a distorted water-like geometry to two Se and one Cl1- atom. The Se–Se bond length is 2.38 Å. The Se–Cl bond length is 3.62 Å. In the sixteenth Se site, Se is bonded in a T-shaped geometry to two Se and one Cl1- atom. The Se–Se bond length is 2.32 Å. The Se–Cl bond length is 3.43 Å. In the seventeenth Se site, Se is bonded in a 2-coordinate geometry to two Se and two Cl1- atoms. There are one shorter (3.54 Å) and one longer (3.61 Å) Se–Cl bond lengths. There are twelve inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one W6+ and two Se atoms. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ and two Se atoms. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ and one Se atom. In the sixth Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ atom. In the seventh Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ atom. In the eighth Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ atom. In the ninth Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one W6+ and one Se atom. In the tenth Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ atom. In the eleventh Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ and two Se atoms. In the twelfth Cl1- site, Cl1- is bonded in a single-bond geometry to one W6+ and one Se atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba20Nb19Se60 by Materials Project

Ba20Nb19Se60 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are ten inequivalent Ba sites. In the first Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with five NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 20–25°. There are a spread of Ba–Se bond distances ranging from 3.49–3.68 Å. In the second Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with five NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 16–25°. There are a spread of Ba–Se bond distances ranging from 3.50–3.69 Å. In the third Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with five NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 21–30°. There are a spread of Ba–Se bond distances ranging from 3.53–3.71 Å. In the fourth Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 21–22°. There are a spread of Ba–Se bond distances ranging from 3.58–3.62 Å. In the fifth Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 15–23°. There are a spread of Ba–Se bond distances ranging from 3.55–3.64 Å. In the sixth Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 21–22°. There are a spread of Ba–Se bond distances ranging from 3.55–3.62 Å. In the seventh Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with five NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 21–25°. There are a spread of Ba–Se bond distances ranging from 3.49–3.67 Å. In the eighth Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with five NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 20–30°. There are a spread of Ba–Se bond distances ranging from 3.53–3.71 Å. In the ninth Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with five NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 20–30°. There are a spread of Ba–Se bond distances ranging from 3.53–3.72 Å. In the tenth Ba site, Ba is bonded to twelve Se atoms to form BaSe12 cuboctahedra that share corners with six BaSe12 cuboctahedra, corners with six NbSe6 octahedra, faces with eight BaSe12 cuboctahedra, and faces with six NbSe6 octahedra. The corner-sharing octahedra tilt angles range from 16–23°. There are a spread of Ba–Se bond distances ranging from 3.55–3.64 Å. There are eleven inequivalent Nb sites. In the first Nb site, Nb is bonded to six Se atoms to form distorted NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and a faceface with one NbSe6 octahedra. There are a spread of Nb–Se bond distances ranging from 2.46–2.83 Å. In the second Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are a spread of Nb–Se bond distances ranging from 2.60–2.68 Å. In the third Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are three shorter (2.63 Å) and three longer (2.65 Å) Nb–Se bond lengths. In the fourth Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are five shorter (2.64 Å) and one longer (2.65 Å) Nb–Se bond lengths. In the fifth Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are three shorter (2.59 Å) and three longer (2.69 Å) Nb–Se bond lengths. In the sixth Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are four shorter (2.64 Å) and two longer (2.65 Å) Nb–Se bond lengths. In the seventh Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are three shorter (2.64 Å) and three longer (2.65 Å) Nb–Se bond lengths. In the eighth Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two NbSe6 octahedra. There are five shorter (2.64 Å) and one longer (2.65 Å) Nb–Se bond lengths. In the ninth Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two equivalent NbSe6 octahedra. All Nb–Se bond lengths are 2.64 Å. In the tenth Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two equivalent NbSe6 octahedra. All Nb–Se bond lengths are 2.64 Å. In the eleventh Nb site, Nb is bonded to six Se atoms to form NbSe6 octahedra that share corners with six BaSe12 cuboctahedra, faces with six BaSe12 cuboctahedra, and faces with two equivalent NbSe6 octahedra. All Nb–Se bond lengths are 2.64 Å. There are thirty inequivalent Se sites. In the first Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–68°. In the second Se site, Se is bonded in a distorted single-bond geometry to four Ba and one Nb atom. In the third Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–68°. In the fourth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 2–67°. In the fifth Se site, Se is bonded in a distorted single-bond geometry to four Ba and one Nb atom. In the sixth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the seventh Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 1–69°. In the eighth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the ninth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the tenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the eleventh Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 1–69°. In the twelfth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 2–68°. In the thirteenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 1–68°. In the fourteenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–68°. In the fifteenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 2–68°. In the sixteenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the seventeenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–68°. In the eighteenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–68°. In the nineteenth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the twentieth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the twenty-first Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 1–68°. In the twenty-second Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 1–69°. In the twenty-third Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the twenty-fourth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–69°. In the twenty-fifth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range from 0–68°. In the twenty-sixth Se site, Se is bonded to four Ba and two Nb atoms to form a mixture of distorted face, edge, and corner-sharing SeBa4Nb2 octahedra. The corner-sharing octahedra tilt angles range f

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cd9(InSe2)20 by Materials Project

Cd9(InSe2)20 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are nine inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form distorted CdSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with three InSe5 trigonal bipyramids, and edges with four InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.64–3.17 Å. In the second Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form distorted CdSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with four InSe5 trigonal bipyramids, and edges with four InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.63–3.28 Å. In the third Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form distorted CdSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with three InSe5 trigonal bipyramids, and edges with four InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.64–3.17 Å. In the fourth Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form CdSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with two InSe5 trigonal bipyramids, and edges with four InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.74–2.87 Å. In the fifth Cd2+ site, Cd2+ is bonded in a 5-coordinate geometry to five Se+1.85- atoms. There are a spread of Cd–Se bond distances ranging from 2.63–3.35 Å. In the sixth Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form CdSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with four InSe5 trigonal bipyramids, and edges with three InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.71–2.88 Å. In the seventh Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form CdSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with four InSe5 trigonal bipyramids, and edges with four InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.73–2.87 Å. In the eighth Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form CdSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with four InSe5 trigonal bipyramids, and edges with three InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.69–2.89 Å. In the ninth Cd2+ site, Cd2+ is bonded to five Se+1.85- atoms to form CdSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with four InSe5 trigonal bipyramids, and edges with four InSe5 trigonal bipyramids. There are a spread of Cd–Se bond distances ranging from 2.72–2.88 Å. There are twenty inequivalent In+2.80+ sites. In the first In+2.80+ site, In+2.80+ is bonded in a 5-coordinate geometry to five Se+1.85- atoms. There are a spread of In–Se bond distances ranging from 2.66–3.30 Å. In the second In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with eight InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.64–3.06 Å. In the third In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.65–3.13 Å. In the fourth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.65–3.05 Å. In the fifth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.67–3.09 Å. In the sixth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.65–3.06 Å. In the seventh In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with eight InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.66–3.04 Å. In the eighth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.65–3.06 Å. In the ninth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with eight InSe5 trigonal bipyramids, and an edgeedge with one CdSe5 trigonal bipyramid. There are a spread of In–Se bond distances ranging from 2.66–3.02 Å. In the tenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.62–3.11 Å. In the eleventh In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.66–3.07 Å. In the twelfth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and an edgeedge with one CdSe5 trigonal bipyramid. There are a spread of In–Se bond distances ranging from 2.63–3.03 Å. In the thirteenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and an edgeedge with one CdSe5 trigonal bipyramid. There are a spread of In–Se bond distances ranging from 2.65–2.99 Å. In the fourteenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.65–3.02 Å. In the fifteenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.66–3.00 Å. In the sixteenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share a cornercorner with one CdSe5 trigonal bipyramid, corners with seven InSe5 trigonal bipyramids, and edges with two CdSe5 trigonal bipyramids. There are a spread of In–Se bond distances ranging from 2.66–3.01 Å. In the seventeenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with eight InSe5 trigonal bipyramids, and an edgeedge with one CdSe5 trigonal bipyramid. There are a spread of In–Se bond distances ranging from 2.65–3.09 Å. In the eighteenth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with eight InSe5 trigonal bipyramids, and an edgeedge with one CdSe5 trigonal bipyramid. There are a spread of In–Se bond distances ranging from 2.66–3.09 Å. In the nineteenth In+2.80+ site, In+2.80+ is bonded in a 5-coordinate geometry to five Se+1.85- atoms. There are a spread of In–Se bond distances ranging from 2.66–3.28 Å. In the twentieth In+2.80+ site, In+2.80+ is bonded to five Se+1.85- atoms to form distorted InSe5 trigonal bipyramids that share corners with two CdSe5 trigonal bipyramids, corners with six InSe5 trigonal bipyramids, and an edgeedge with one CdSe5 trigonal bipyramid. There are a spread of In–Se bond distances ranging from 2.65–3.02 Å. There are forty inequivalent Se+1.85- sites. In the first Se+1.85- site, Se+1.85- is bonded to one Cd2+ and three In+2.80+ atoms to form distorted SeCdIn3 trigonal pyramids that share a cornercorner with one SeCd2In2 tetrahedra and corners with four SeCdIn3 trigonal pyramids. In the second Se+1.85- site, Se+1.85- is bonded in a 4-coordinate geometry to one Cd2+ and three In+2.80+ atoms. In the third Se+1.85- site, Se+1.85- is bonded in a distorted trigonal non-coplanar geometry to one Cd2+ and two In+2.80+ atoms. In the fourth Se+1.85- site, Se+1.85- is bonded in a 3-coordinate geometry to three In+2.80+ atoms. In the fifth Se+1.85- site, Se+1.85- is bonded in a distorted trigonal non-coplanar geometry to one Cd2+ and two In+2.80+ atoms. In the sixth Se+1.85- site, Se+1.85- is bonded in a 4-coordinate geometry to one Cd2+ and three In+2.80+ atoms. In the seventh Se+1.85- site, Se+1.85- is bonded to one Cd2+ and three In+2.80+ atoms to form distorted SeCdIn3 trigonal pyramids that share a cornercorner with one SeCd2In2 tetrahedra, corners with six SeCdIn3 trigonal pyramids, and an edgeedge with one SeCd2In2 tetrahedra. In the eighth Se+1.85- site, Se+1.85- is bonded in a 4-coordinate geometry to two Cd2+ and two In+2.80+ atoms. In the ninth Se+1.85- site, Se+1.85- is bonded to one Cd2+ and three In+2.80+ atoms to form distorted SeCdIn3 trigonal pyramids that share corners with two SeCd2In2 tetrahedra and corners with six SeCdIn3 trigonal pyramids. In the tenth Se+1.85- site, Se+1.85- is bonded to two Cd2+ and two In+2.80+ atoms to form a mixture of edge and corner-sharing SeCd2In2 tetrahedra. In the eleventh Se+1.85- site, Se+1.85- is bonded to one Cd2+ and three In+2.80+ atoms to form distorted SeCdIn3 trigonal pyramids that share a cornercorner with one SeCd2In2 tetrahedra, corners with six SeCdIn3 trigonal pyramids, and an edgeedge with one SeCd2In2 tetrahedra. In the twelfth Se+1.85- site, Se+1.85- is bonded in a distorted trigonal non-coplanar geometry to one Cd2+ and two In+2.80+ atoms. In the thirteenth Se+1.85- site, Se+1.85- is bonded to one Cd2+ and three In+2.80+ atoms to form distorted SeCdIn3 trigonal pyramids that share corners with two SeCd2In2 tetrahedra and corners with six SeCdIn3 trigonal pyramids. In the fourteenth Se+1.85- site, Se+1.85- is bonded in a distorted T-shaped geometry to one Cd2+ and two In+2.80+ atoms. In the fifteenth Se+1.85- site, Se+1.85- is bonded to one Cd2+ and three In+2.80+ atoms to form distorted SeCdIn3 trigonal pyramids that share a cornercorner with one SeCd2In2 tetrahedra, corners with seven SeCdIn3 trigonal pyramids, and an edgeedge with one SeCd2In2 tetrahedra. In the sixteenth Se+1.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pr27Se40 by Materials Project

Pr27Se40 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty-seven inequivalent Pr sites. In the first Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.97–3.25 Å. In the second Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.99–3.26 Å. In the third Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.00–3.28 Å. In the fourth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.99–3.23 Å. In the fifth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.02–3.30 Å. In the sixth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.03–3.28 Å. In the seventh Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.29 Å. In the eighth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.27 Å. In the ninth Pr site, Pr is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Pr–Se bond distances ranging from 2.96–3.35 Å. In the tenth Pr site, Pr is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Pr–Se bond distances ranging from 2.97–3.35 Å. In the eleventh Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.28 Å. In the twelfth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.00–3.23 Å. In the thirteenth Pr site, Pr is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Pr–Se bond distances ranging from 2.99–3.27 Å. In the fourteenth Pr site, Pr is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Pr–Se bond distances ranging from 2.98–3.35 Å. In the fifteenth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.00–3.23 Å. In the sixteenth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.02–3.23 Å. In the seventeenth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.99–3.24 Å. In the eighteenth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.98–3.22 Å. In the nineteenth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.24 Å. In the twentieth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.28 Å. In the twenty-first Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.00–3.23 Å. In the twenty-second Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.02–3.22 Å. In the twenty-third Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.00–3.29 Å. In the twenty-fourth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.98–3.29 Å. In the twenty-fifth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 2.98–3.25 Å. In the twenty-sixth Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.29 Å. In the twenty-seventh Pr site, Pr is bonded to eight Se atoms to form a mixture of distorted edge, corner, and face-sharing PrSe8 hexagonal bipyramids. There are a spread of Pr–Se bond distances ranging from 3.01–3.32 Å. There are forty inequivalent Se sites. In the first Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with nine SePr6 octahedra, corners with seven SePr5 square pyramids, edges with four SePr5 square pyramids, an edgeedge with one SePr5 trigonal bipyramid, and faces with three SePr6 octahedra. The corner-sharing octahedra tilt angles range from 13–52°. In the second Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share corners with five SePr6 octahedra, corners with ten SePr5 square pyramids, edges with five SePr6 octahedra, an edgeedge with one SePr5 square pyramid, faces with two SePr6 octahedra, and faces with three SePr5 square pyramids. The corner-sharing octahedra tilt angles range from 46–55°. In the third Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share corners with five SePr6 octahedra, corners with eight SePr5 square pyramids, corners with two equivalent SePr5 trigonal bipyramids, edges with two SePr6 octahedra, edges with four SePr5 square pyramids, faces with two SePr6 octahedra, and faces with three SePr5 square pyramids. The corner-sharing octahedra tilt angles range from 18–53°. In the fourth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with ten SePr6 octahedra, corners with three SePr5 square pyramids, edges with three SePr6 octahedra, edges with five SePr5 square pyramids, a faceface with one SePr6 octahedra, and a faceface with one SePr5 square pyramid. The corner-sharing octahedra tilt angles range from 20–49°. In the fifth Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share corners with five SePr6 octahedra, corners with nine SePr5 square pyramids, a cornercorner with one SePr5 trigonal bipyramid, edges with three SePr6 octahedra, edges with three SePr5 square pyramids, faces with three SePr6 octahedra, and faces with two SePr5 square pyramids. The corner-sharing octahedra tilt angles range from 45–52°. In the sixth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with eight SePr6 octahedra, corners with five SePr5 square pyramids, edges with four SePr6 octahedra, edges with four SePr5 square pyramids, and faces with two SePr6 octahedra. The corner-sharing octahedra tilt angles range from 19–50°. In the seventh Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share corners with five SePr6 octahedra, corners with nine SePr5 square pyramids, a cornercorner with one SePr5 trigonal bipyramid, edges with three SePr6 octahedra, edges with three SePr5 square pyramids, faces with three SePr6 octahedra, and faces with two SePr5 square pyramids. The corner-sharing octahedra tilt angles range from 21–48°. In the eighth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with eight SePr6 octahedra, corners with five SePr5 square pyramids, edges with four SePr6 octahedra, edges with four SePr5 square pyramids, a faceface with one SePr6 octahedra, and a faceface with one SePr5 square pyramid. The corner-sharing octahedra tilt angles range from 17–51°. In the ninth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with eight SePr6 octahedra, corners with seven SePr5 square pyramids, a cornercorner with one SePr5 trigonal bipyramid, edges with two SePr6 octahedra, edges with three SePr5 square pyramids, and faces with three SePr6 octahedra. The corner-sharing octahedra tilt angles range from 11–53°. In the tenth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with six SePr6 octahedra, corners with six SePr5 square pyramids, a cornercorner with one SePr5 trigonal bipyramid, edges with three SePr6 octahedra, edges with five SePr5 square pyramids, and faces with two SePr6 octahedra. The corner-sharing octahedra tilt angles range from 17–50°. In the eleventh Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with eight SePr6 octahedra, corners with five SePr5 square pyramids, edges with three SePr6 octahedra, edges with five SePr5 square pyramids, a faceface with one SePr5 square pyramid, and a faceface with one SePr5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 17–51°. In the twelfth Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share a cornercorner with one SePr6 octahedra, corners with fourteen SePr5 square pyramids, edges with four SePr6 octahedra, edges with two SePr5 square pyramids, faces with two SePr6 octahedra, and faces with three SePr5 square pyramids. The corner-sharing octahedral tilt angles are 46°. In the thirteenth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with six SePr6 octahedra, corners with ten SePr5 square pyramids, edges with two SePr6 octahedra, edges with three SePr5 square pyramids, faces with two SePr6 octahedra, and a faceface with one SePr5 square pyramid. The corner-sharing octahedra tilt angles range from 18–52°. In the fourteenth Se site, Se is bonded to five Pr atoms to form SePr5 square pyramids that share corners with eight SePr6 octahedra, corners with eight SePr5 square pyramids, edges with two SePr6 octahedra, edges with three SePr5 square pyramids, faces with two SePr6 octahedra, and a faceface with one SePr5 square pyramid. The corner-sharing octahedra tilt angles range from 19–50°. In the fifteenth Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share corners with seven SePr6 octahedra, corners with eight SePr5 square pyramids, edges with two SePr6 octahedra, edges with four SePr5 square pyramids, faces with two SePr6 octahedra, and faces with three SePr5 square pyramids. The corner-sharing octahedra tilt angles range from 20–54°. In the sixteenth Se site, Se is bonded to six Pr atoms to form distorted SePr6 octahedra that share corners with seven SePr6 octahedra, corners with eight SePr5 square pyramids, an edgeedge with one SePr6 octahedra, edges with five SePr5 square pyramids, faces with two SePr6 octahedra, and faces with three SePr5 square pyramids. The corner-sharing octahedra tilt angles

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IrSe3 by Materials Project

IrSe3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are seven inequivalent Ir5+ sites. In the first Ir5+ site, Ir5+ is bonded to six Se+1.67- atoms to form IrSe6 octahedra that share corners with four IrSe6 octahedra and corners with two equivalent IrSe5 square pyramids. The corner-sharing octahedra tilt angles range from 63–67°. There are a spread of Ir–Se bond distances ranging from 2.48–2.54 Å. In the second Ir5+ site, Ir5+ is bonded to six Se+1.67- atoms to form corner-sharing IrSe6 octahedra. The corner-sharing octahedra tilt angles range from 63–66°. There are a spread of Ir–Se bond distances ranging from 2.50–2.56 Å. In the third Ir5+ site, Ir5+ is bonded to six Se+1.67- atoms to form IrSe6 octahedra that share corners with four IrSe6 octahedra and corners with two equivalent IrSe5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 63–67°. There are a spread of Ir–Se bond distances ranging from 2.49–2.54 Å. In the fourth Ir5+ site, Ir5+ is bonded to five Se+1.67- atoms to form IrSe5 trigonal bipyramids that share corners with two equivalent IrSe6 octahedra and corners with two equivalent IrSe5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 60–63°. There are a spread of Ir–Se bond distances ranging from 2.43–2.49 Å. In the fifth Ir5+ site, Ir5+ is bonded to five Se+1.67- atoms to form corner-sharing IrSe5 trigonal bipyramids. There are a spread of Ir–Se bond distances ranging from 2.36–2.52 Å. In the sixth Ir5+ site, Ir5+ is bonded to five Se+1.67- atoms to form IrSe5 square pyramids that share corners with two equivalent IrSe6 octahedra and corners with two equivalent IrSe5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 60–63°. There are a spread of Ir–Se bond distances ranging from 2.42–2.49 Å. In the seventh Ir5+ site, Ir5+ is bonded to six Se+1.67- atoms to form corner-sharing IrSe6 octahedra. The corner-sharing octahedra tilt angles range from 63–67°. There are four shorter (2.51 Å) and two longer (2.55 Å) Ir–Se bond lengths. There are twenty-one inequivalent Se+1.67- sites. In the first Se+1.67- site, Se+1.67- is bonded in a 3-coordinate geometry to two Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.40 Å. In the second Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.50 Å. In the third Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to one Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.40 Å. In the fourth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.47 Å. In the fifth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.46 Å. In the sixth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.48 Å. In the seventh Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ atoms. In the eighth Se+1.67- site, Se+1.67- is bonded in a 4-coordinate geometry to three Ir5+ and one Se+1.67- atom. The Se–Se bond length is 2.53 Å. In the ninth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ atoms. In the tenth Se+1.67- site, Se+1.67- is bonded in a 4-coordinate geometry to three Ir5+ and one Se+1.67- atom. In the eleventh Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ atoms. In the twelfth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. In the thirteenth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. In the fourteenth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. In the fifteenth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ atoms. In the sixteenth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to one Ir5+ and one Se+1.67- atom. In the seventeenth Se+1.67- site, Se+1.67- is bonded in a 2-coordinate geometry to two Ir5+ and one Se+1.67- atom. In the eighteenth Se+1.67- site, Se+1.67- is bonded in a 3-coordinate geometry to two Ir5+ and one Se+1.67- atom. In the nineteenth Se+1.67- site, Se+1.67- is bonded in a distorted single-bond geometry to one Ir5+ atom. In the twentieth Se+1.67- site, Se+1.67- is bonded in a distorted single-bond geometry to one Ir5+ atom. In the twenty-first Se+1.67- site, Se+1.67- is bonded in a distorted single-bond geometry to one Ir5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba(SnSe)32 by Materials Project

Ba(SnSe)32 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. Ba is bonded in a 6-coordinate geometry to two equivalent Sn and seven Se atoms. Both Ba–Sn bond lengths are 3.58 Å. There are a spread of Ba–Se bond distances ranging from 3.31–3.64 Å. There are twenty inequivalent Sn sites. In the first Sn site, Sn is bonded in a 3-coordinate geometry to three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.79–2.86 Å. In the second Sn site, Sn is bonded in a rectangular see-saw-like geometry to four Se atoms. There are a spread of Sn–Se bond distances ranging from 2.80–3.07 Å. In the third Sn site, Sn is bonded in a 3-coordinate geometry to three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.75–2.84 Å. In the fourth Sn site, Sn is bonded in a 3-coordinate geometry to three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.72–3.08 Å. In the fifth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are one shorter (2.78 Å) and two longer (2.85 Å) Sn–Se bond lengths. In the sixth Sn site, Sn is bonded in a distorted rectangular see-saw-like geometry to four Se atoms. There are a spread of Sn–Se bond distances ranging from 2.81–3.11 Å. In the seventh Sn site, Sn is bonded in a 3-coordinate geometry to three Se atoms. There are one shorter (2.79 Å) and two longer (2.83 Å) Sn–Se bond lengths. In the eighth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.78–2.85 Å. In the ninth Sn site, Sn is bonded in a 4-coordinate geometry to four Se atoms. There are a spread of Sn–Se bond distances ranging from 2.79–3.05 Å. In the tenth Sn site, Sn is bonded in a 4-coordinate geometry to three Se atoms. There are two shorter (2.81 Å) and one longer (2.91 Å) Sn–Se bond lengths. In the eleventh Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are one shorter (2.79 Å) and two longer (2.84 Å) Sn–Se bond lengths. In the twelfth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.80–2.87 Å. In the thirteenth Sn site, Sn is bonded in a distorted rectangular see-saw-like geometry to four Se atoms. There are a spread of Sn–Se bond distances ranging from 2.80–3.21 Å. In the fourteenth Sn site, Sn is bonded in a 5-coordinate geometry to one Ba and three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.71–2.93 Å. In the fifteenth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. All Sn–Se bond lengths are 2.81 Å. In the sixteenth Sn site, Sn is bonded in a 3-coordinate geometry to three Se atoms. There are a spread of Sn–Se bond distances ranging from 2.78–2.91 Å. In the seventeenth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are one shorter (2.81 Å) and two longer (2.84 Å) Sn–Se bond lengths. In the eighteenth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are one shorter (2.80 Å) and two longer (2.85 Å) Sn–Se bond lengths. In the nineteenth Sn site, Sn is bonded in a distorted octahedral geometry to six Se atoms. There are a spread of Sn–Se bond distances ranging from 2.85–3.30 Å. In the twentieth Sn site, Sn is bonded in a distorted T-shaped geometry to three Se atoms. There are one shorter (2.77 Å) and two longer (2.86 Å) Sn–Se bond lengths. There are twenty inequivalent Se sites. In the first Se site, Se is bonded in a 3-coordinate geometry to three Sn atoms. In the second Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Sn atoms. In the third Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Sn atoms. In the fourth Se site, Se is bonded to four Sn atoms to form distorted SeSn4 tetrahedra that share corners with two SeSn5 trigonal bipyramids and corners with two SeBaSn3 trigonal pyramids. In the fifth Se site, Se is bonded to one Ba and three Sn atoms to form distorted SeBaSn3 trigonal pyramids that share corners with three SeSn4 tetrahedra, a cornercorner with one SeSn5 trigonal bipyramid, and edges with two equivalent SeBaSn4 trigonal bipyramids. In the sixth Se site, Se is bonded to five Sn atoms to form distorted SeSn5 trigonal bipyramids that share corners with two equivalent SeSn4 tetrahedra, corners with two equivalent SeBaSn4 trigonal bipyramids, and corners with three SeBaSn3 trigonal pyramids. In the seventh Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Sn atoms. In the eighth Se site, Se is bonded in a 3-coordinate geometry to three Sn atoms. In the ninth Se site, Se is bonded in a see-saw-like geometry to one Ba and three Sn atoms. In the tenth Se site, Se is bonded to one Ba and four Sn atoms to form distorted SeBaSn4 trigonal bipyramids that share a cornercorner with one SeSn4 tetrahedra, a cornercorner with one SeSn5 trigonal bipyramid, a cornercorner with one SeSn4 trigonal pyramid, an edgeedge with one SeBaSn3 tetrahedra, an edgeedge with one SeBaSn4 trigonal bipyramid, and an edgeedge with one SeBaSn3 trigonal pyramid. In the eleventh Se site, Se is bonded in a trigonal non-coplanar geometry to three Sn atoms. In the twelfth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Sn atoms. In the thirteenth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Sn atoms. In the fourteenth Se site, Se is bonded in a 4-coordinate geometry to one Ba and three Sn atoms. In the fifteenth Se site, Se is bonded in a 3-coordinate geometry to three Sn atoms. In the sixteenth Se site, Se is bonded to one Ba and three Sn atoms to form distorted SeBaSn3 tetrahedra that share corners with three SeBaSn3 trigonal pyramids and edges with two equivalent SeBaSn4 trigonal bipyramids. In the seventeenth Se site, Se is bonded in a 4-coordinate geometry to four Sn atoms. In the eighteenth Se site, Se is bonded in a 3-coordinate geometry to three Sn atoms. In the nineteenth Se site, Se is bonded to four Sn atoms to form distorted SeSn4 trigonal pyramids that share corners with two SeSn4 tetrahedra, corners with two SeSn5 trigonal bipyramids, and a cornercorner with one SeSn4 trigonal pyramid. In the twentieth Se site, Se is bonded in a distorted trigonal non-coplanar geometry to three Sn atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na6B18Se17 by Materials Project

Na6B18Se17 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are six inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Se+1.06- atoms. There are a spread of Na–Se bond distances ranging from 2.94–3.66 Å. In the second Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Se+1.06- atoms. There are a spread of Na–Se bond distances ranging from 2.95–3.66 Å. In the third Na1+ site, Na1+ is bonded in a 4-coordinate geometry to six Se+1.06- atoms. There are a spread of Na–Se bond distances ranging from 2.97–3.64 Å. In the fourth Na1+ site, Na1+ is bonded in a distorted square pyramidal geometry to five Se+1.06- atoms. There are a spread of Na–Se bond distances ranging from 2.94–3.49 Å. In the fifth Na1+ site, Na1+ is bonded in a distorted square pyramidal geometry to five Se+1.06- atoms. There are a spread of Na–Se bond distances ranging from 2.95–3.50 Å. In the sixth Na1+ site, Na1+ is bonded in a 2-coordinate geometry to five Se+1.06- atoms. There are a spread of Na–Se bond distances ranging from 2.87–3.60 Å. There are eighteen inequivalent B+0.67+ sites. In the first B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the second B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the third B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.01 Å. In the fourth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.01 Å. In the fifth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the sixth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.01 Å. In the seventh B+0.67+ site, B+0.67+ is bonded in a trigonal planar geometry to three Se+1.06- atoms. There is one shorter (1.93 Å) and two longer (1.99 Å) B–Se bond length. In the eighth B+0.67+ site, B+0.67+ is bonded in a trigonal planar geometry to three Se+1.06- atoms. There is one shorter (1.93 Å) and two longer (1.99 Å) B–Se bond length. In the ninth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the tenth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the eleventh B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the twelfth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the thirteenth B+0.67+ site, B+0.67+ is bonded in a trigonal planar geometry to three Se+1.06- atoms. There are a spread of B–Se bond distances ranging from 1.95–1.99 Å. In the fourteenth B+0.67+ site, B+0.67+ is bonded in a trigonal planar geometry to three Se+1.06- atoms. There are a spread of B–Se bond distances ranging from 1.95–1.99 Å. In the fifteenth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the sixteenth B+0.67+ site, B+0.67+ is bonded in a single-bond geometry to one Se+1.06- atom. The B–Se bond length is 2.02 Å. In the seventeenth B+0.67+ site, B+0.67+ is bonded in a trigonal planar geometry to three Se+1.06- atoms. There are a spread of B–Se bond distances ranging from 1.91–2.00 Å. In the eighteenth B+0.67+ site, B+0.67+ is bonded in a trigonal planar geometry to three Se+1.06- atoms. There are a spread of B–Se bond distances ranging from 1.92–2.01 Å. There are seventeen inequivalent Se+1.06- sites. In the first Se+1.06- site, Se+1.06- is bonded in a 2-coordinate geometry to two Na1+ and two B+0.67+ atoms. In the second Se+1.06- site, Se+1.06- is bonded in a 3-coordinate geometry to one Na1+ and two B+0.67+ atoms. In the third Se+1.06- site, Se+1.06- is bonded in a 4-coordinate geometry to three Na1+ and one B+0.67+ atom. In the fourth Se+1.06- site, Se+1.06- is bonded in a distorted rectangular see-saw-like geometry to three Na1+ and one B+0.67+ atom. In the fifth Se+1.06- site, Se+1.06- is bonded in a 4-coordinate geometry to three Na1+ and one B+0.67+ atom. In the sixth Se+1.06- site, Se+1.06- is bonded in a 4-coordinate geometry to three Na1+ and one B+0.67+ atom. In the seventh Se+1.06- site, Se+1.06- is bonded in an L-shaped geometry to one Na1+ and two B+0.67+ atoms. In the eighth Se+1.06- site, Se+1.06- is bonded in an L-shaped geometry to one Na1+ and two B+0.67+ atoms. In the ninth Se+1.06- site, Se+1.06- is bonded in a 3-coordinate geometry to one Na1+ and two B+0.67+ atoms. In the tenth Se+1.06- site, Se+1.06- is bonded in a 2-coordinate geometry to two Na1+ and two B+0.67+ atoms. In the eleventh Se+1.06- site, Se+1.06- is bonded in a 2-coordinate geometry to two equivalent Na1+ and two B+0.67+ atoms. In the twelfth Se+1.06- site, Se+1.06- is bonded in a distorted L-shaped geometry to two Na1+ and two B+0.67+ atoms. In the thirteenth Se+1.06- site, Se+1.06- is bonded in a distorted L-shaped geometry to two Na1+ and two B+0.67+ atoms. In the fourteenth Se+1.06- site, Se+1.06- is bonded in a 4-coordinate geometry to two Na1+ and two B+0.67+ atoms. In the fifteenth Se+1.06- site, Se+1.06- is bonded in a 4-coordinate geometry to two Na1+ and two B+0.67+ atoms. In the sixteenth Se+1.06- site, Se+1.06- is bonded in a 4-coordinate geometry to two Na1+ and two B+0.67+ atoms. In the seventeenth Se+1.06- site, Se+1.06- is bonded in a 3-coordinate geometry to one Na1+ and two B+0.67+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2(MoSe6)3 by Materials Project

K2(MoSe6)3 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine Se+1.11- atoms. There are a spread of K–Se bond distances ranging from 3.45–4.02 Å. In the second K1+ site, K1+ is bonded in a 5-coordinate geometry to six Se+1.11- atoms. There are a spread of K–Se bond distances ranging from 3.37–3.84 Å. There are three inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to seven Se+1.11- atoms to form distorted face-sharing MoSe7 pentagonal bipyramids. There are a spread of Mo–Se bond distances ranging from 2.50–2.69 Å. In the second Mo6+ site, Mo6+ is bonded to seven Se+1.11- atoms to form distorted face-sharing MoSe7 pentagonal bipyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.68 Å. In the third Mo6+ site, Mo6+ is bonded to seven Se+1.11- atoms to form face-sharing MoSe7 pentagonal bipyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.68 Å. There are eighteen inequivalent Se+1.11- sites. In the first Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to one K1+ and three Mo6+ atoms. In the second Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two K1+, one Mo6+, and one Se+1.11- atom. The Se–Se bond length is 2.36 Å. In the third Se+1.11- site, Se+1.11- is bonded in a 1-coordinate geometry to one Mo6+ and two Se+1.11- atoms. The Se–Se bond length is 2.42 Å. In the fourth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one K1+ and one Se+1.11- atom. In the fifth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to two Mo6+ and one Se+1.11- atom. The Se–Se bond length is 2.35 Å. In the sixth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to one K1+, two Mo6+, and one Se+1.11- atom. In the seventh Se+1.11- site, Se+1.11- is bonded in a 5-coordinate geometry to two Mo6+ atoms. In the eighth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Mo6+ atoms. In the ninth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two Mo6+ and one Se+1.11- atom. The Se–Se bond length is 2.42 Å. In the tenth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to one K1+, two Mo6+, and one Se+1.11- atom. In the eleventh Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one Mo6+ and one Se+1.11- atom. The Se–Se bond length is 2.40 Å. In the twelfth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two equivalent K1+ and two Se+1.11- atoms. The Se–Se bond length is 2.42 Å. In the thirteenth Se+1.11- site, Se+1.11- is bonded in a distorted water-like geometry to two Se+1.11- atoms. The Se–Se bond length is 2.43 Å. In the fourteenth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two K1+, one Mo6+, and one Se+1.11- atom. In the fifteenth Se+1.11- site, Se+1.11- is bonded in a 4-coordinate geometry to two K1+, one Mo6+, and one Se+1.11- atom. The Se–Se bond length is 2.43 Å. In the sixteenth Se+1.11- site, Se+1.11- is bonded in a 2-coordinate geometry to one K1+ and two Se+1.11- atoms. The Se–Se bond length is 2.37 Å. In the seventeenth Se+1.11- site, Se+1.11- is bonded in a distorted trigonal non-coplanar geometry to one K1+ and two Se+1.11- atoms. The Se–Se bond length is 2.40 Å. In the eighteenth Se+1.11- site, Se+1.11- is bonded in a 1-coordinate geometry to one K1+, one Mo6+, and one Se+1.11- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4Mo6Se25O by Materials Project

K4Mo6Se25O crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight Se+1.52- atoms. There are a spread of K–Se bond distances ranging from 3.48–3.97 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight Se+1.52- atoms. There are a spread of K–Se bond distances ranging from 3.43–4.03 Å. There are four inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded in a distorted single-bond geometry to six Se+1.52- and one O2- atom. There are a spread of Mo–Se bond distances ranging from 2.58–2.72 Å. The Mo–O bond length is 2.09 Å. In the second Mo6+ site, Mo6+ is bonded to seven Se+1.52- atoms to form distorted face-sharing MoSe7 hexagonal pyramids. There are a spread of Mo–Se bond distances ranging from 2.60–2.69 Å. In the third Mo6+ site, Mo6+ is bonded in a distorted single-bond geometry to six Se+1.52- and one O2- atom. There are a spread of Mo–Se bond distances ranging from 2.58–2.72 Å. The Mo–O bond length is 2.09 Å. In the fourth Mo6+ site, Mo6+ is bonded to seven Se+1.52- atoms to form face-sharing MoSe7 pentagonal bipyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.69 Å. There are seventeen inequivalent Se+1.52- sites. In the first Se+1.52- site, Se+1.52- is bonded in a 4-coordinate geometry to two equivalent K1+, one Mo6+, and one Se+1.52- atom. The Se–Se bond length is 2.39 Å. In the second Se+1.52- site, Se+1.52- is bonded in a 1-coordinate geometry to two equivalent K1+, one Mo6+, and one Se+1.52- atom. The Se–Se bond length is 2.41 Å. In the third Se+1.52- site, Se+1.52- is bonded in a 2-coordinate geometry to one K1+, two Mo6+, and one Se+1.52- atom. The Se–Se bond length is 2.37 Å. In the fourth Se+1.52- site, Se+1.52- is bonded in a 2-coordinate geometry to one K1+, two Mo6+, and one Se+1.52- atom. The Se–Se bond length is 2.34 Å. In the fifth Se+1.52- site, Se+1.52- is bonded in a 1-coordinate geometry to two equivalent K1+, one Mo6+, and one Se+1.52- atom. The Se–Se bond length is 2.38 Å. In the sixth Se+1.52- site, Se+1.52- is bonded in a 2-coordinate geometry to two equivalent K1+, one Mo6+, and one Se+1.52- atom. The Se–Se bond length is 2.40 Å. In the seventh Se+1.52- site, Se+1.52- is bonded in a 2-coordinate geometry to two equivalent Mo6+ and one Se+1.52- atom. The Se–Se bond length is 2.37 Å. In the eighth Se+1.52- site, Se+1.52- is bonded in a 2-coordinate geometry to two equivalent Mo6+ and one Se+1.52- atom. The Se–Se bond length is 2.34 Å. In the ninth Se+1.52- site, Se+1.52- is bonded in a 3-coordinate geometry to two K1+, one Mo6+, and one Se+1.52- atom. In the tenth Se+1.52- site, Se+1.52- is bonded in a 4-coordinate geometry to two K1+, one Mo6+, and one Se+1.52- atom. In the eleventh Se+1.52- site, Se+1.52- is bonded in a 4-coordinate geometry to two equivalent K1+, one Mo6+, and one Se+1.52- atom. In the twelfth Se+1.52- site, Se+1.52- is bonded in a 4-coordinate geometry to two equivalent K1+, one Mo6+, and one Se+1.52- atom. In the thirteenth Se+1.52- site, Se+1.52- is bonded in a 5-coordinate geometry to two equivalent K1+, two equivalent Mo6+, and one Se+1.52- atom. In the fourteenth Se+1.52- site, Se+1.52- is bonded in a 5-coordinate geometry to two equivalent K1+, two equivalent Mo6+, and one Se+1.52- atom. In the fifteenth Se+1.52- site, Se+1.52- is bonded in a 4-coordinate geometry to two Mo6+ and one Se+1.52- atom. In the sixteenth Se+1.52- site, Se+1.52- is bonded in a 2-coordinate geometry to two Mo6+ and two Se+1.52- atoms. The Se–Se bond length is 3.19 Å. In the seventeenth Se+1.52- site, Se+1.52- is bonded in a 3-coordinate geometry to three Mo6+ and two equivalent Se+1.52- atoms. O2- is bonded in a trigonal non-coplanar geometry to three Mo6+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KNb2PSe10 by Materials Project

KNb2PSe10 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 7-coordinate geometry to seven Se+1.40- atoms. There are a spread of K–Se bond distances ranging from 3.47–3.86 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight Se+1.40- atoms. There are a spread of K–Se bond distances ranging from 3.47–3.93 Å. There are four inequivalent Nb4+ sites. In the first Nb4+ site, Nb4+ is bonded to eight Se+1.40- atoms to form distorted NbSe8 hexagonal bipyramids that share an edgeedge with one PSe4 tetrahedra and faces with two equivalent NbSe8 hexagonal bipyramids. There are a spread of Nb–Se bond distances ranging from 2.64–2.80 Å. In the second Nb4+ site, Nb4+ is bonded to eight Se+1.40- atoms to form distorted NbSe8 hexagonal bipyramids that share an edgeedge with one PSe4 tetrahedra and faces with two equivalent NbSe8 hexagonal bipyramids. There are a spread of Nb–Se bond distances ranging from 2.64–2.81 Å. In the third Nb4+ site, Nb4+ is bonded to eight Se+1.40- atoms to form distorted NbSe8 hexagonal bipyramids that share an edgeedge with one PSe4 tetrahedra and faces with two equivalent NbSe8 hexagonal bipyramids. There are a spread of Nb–Se bond distances ranging from 2.64–2.81 Å. In the fourth Nb4+ site, Nb4+ is bonded to eight Se+1.40- atoms to form NbSe8 hexagonal bipyramids that share an edgeedge with one PSe4 tetrahedra and faces with two equivalent NbSe8 hexagonal bipyramids. There are a spread of Nb–Se bond distances ranging from 2.63–2.81 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four Se+1.40- atoms to form PSe4 tetrahedra that share edges with two NbSe8 hexagonal bipyramids. There are a spread of P–Se bond distances ranging from 2.17–2.27 Å. In the second P5+ site, P5+ is bonded to four Se+1.40- atoms to form PSe4 tetrahedra that share edges with two NbSe8 hexagonal bipyramids. There are a spread of P–Se bond distances ranging from 2.18–2.27 Å. There are twenty inequivalent Se+1.40- sites. In the first Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to two Nb4+ and one Se+1.40- atom. The Se–Se bond length is 2.33 Å. In the second Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. The Se–Se bond length is 2.36 Å. In the third Se+1.40- site, Se+1.40- is bonded in a 4-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. In the fourth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to two Nb4+ and one Se+1.40- atom. The Se–Se bond length is 2.33 Å. In the fifth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. The Se–Se bond length is 2.37 Å. In the sixth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to two Nb4+ and one Se+1.40- atom. In the seventh Se+1.40- site, Se+1.40- is bonded in a distorted L-shaped geometry to one K1+, one Nb4+, and one P5+ atom. In the eighth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. In the ninth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to one K1+, one Nb4+, and one P5+ atom. In the tenth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to two Nb4+ and one Se+1.40- atom. In the eleventh Se+1.40- site, Se+1.40- is bonded in a 3-coordinate geometry to one K1+, one Nb4+, and one P5+ atom. In the twelfth Se+1.40- site, Se+1.40- is bonded in a 2-coordinate geometry to one K1+, one Nb4+, and one P5+ atom. In the thirteenth Se+1.40- site, Se+1.40- is bonded in a 4-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. The Se–Se bond length is 2.35 Å. In the fourteenth Se+1.40- site, Se+1.40- is bonded in a 3-coordinate geometry to two Nb4+ and one P5+ atom. In the fifteenth Se+1.40- site, Se+1.40- is bonded in a 4-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. In the sixteenth Se+1.40- site, Se+1.40- is bonded in a 4-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. The Se–Se bond length is 2.35 Å. In the seventeenth Se+1.40- site, Se+1.40- is bonded in a 3-coordinate geometry to two Nb4+ and one P5+ atom. In the eighteenth Se+1.40- site, Se+1.40- is bonded in a 4-coordinate geometry to one K1+, two Nb4+, and one Se+1.40- atom. In the nineteenth Se+1.40- site, Se+1.40- is bonded in a distorted L-shaped geometry to one K1+ and one P5+ atom. In the twentieth Se+1.40- site, Se+1.40- is bonded in a 1-coordinate geometry to two K1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nd10Se19 by Materials Project

Nd10Se19 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are ten inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a 9-coordinate geometry to nine Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.00–3.26 Å. In the second Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.00–3.16 Å. In the third Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.00–3.15 Å. In the fourth Nd3+ site, Nd3+ is bonded in a 9-coordinate geometry to nine Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 2.99–3.22 Å. In the fifth Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.00–3.16 Å. In the sixth Nd3+ site, Nd3+ is bonded in a 9-coordinate geometry to nine Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.04–3.20 Å. In the seventh Nd3+ site, Nd3+ is bonded in a 9-coordinate geometry to nine Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.02–3.21 Å. In the eighth Nd3+ site, Nd3+ is bonded in a 9-coordinate geometry to nine Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.02–3.20 Å. In the ninth Nd3+ site, Nd3+ is bonded in a 9-coordinate geometry to nine Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.03–3.20 Å. In the tenth Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se+1.58- atoms. There are a spread of Nd–Se bond distances ranging from 3.00–3.14 Å. There are nineteen inequivalent Se+1.58- sites. In the first Se+1.58- site, Se+1.58- is bonded in a 7-coordinate geometry to four Nd3+ and one Se+1.58- atom. The Se–Se bond length is 2.73 Å. In the second Se+1.58- site, Se+1.58- is bonded in a 7-coordinate geometry to four Nd3+ and one Se+1.58- atom. The Se–Se bond length is 2.71 Å. In the third Se+1.58- site, Se+1.58- is bonded in a 8-coordinate geometry to four Nd3+ and four Se+1.58- atoms. There are a spread of Se–Se bond distances ranging from 2.86–3.10 Å. In the fourth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the fifth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the sixth Se+1.58- site, Se+1.58- is bonded in a 8-coordinate geometry to four Nd3+ and four Se+1.58- atoms. There are a spread of Se–Se bond distances ranging from 2.84–3.11 Å. In the seventh Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the eighth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the ninth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the tenth Se+1.58- site, Se+1.58- is bonded in a 4-coordinate geometry to four Nd3+ and one Se+1.58- atom. In the eleventh Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the twelfth Se+1.58- site, Se+1.58- is bonded in a 4-coordinate geometry to four Nd3+ and one Se+1.58- atom. In the thirteenth Se+1.58- site, Se+1.58- is bonded in a 5-coordinate geometry to four Nd3+ and two Se+1.58- atoms. The Se–Se bond length is 2.51 Å. In the fourteenth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the fifteenth Se+1.58- site, Se+1.58- is bonded in a 4-coordinate geometry to four Nd3+ atoms. In the sixteenth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the seventeenth Se+1.58- site, Se+1.58- is bonded in a 5-coordinate geometry to four Nd3+ and two Se+1.58- atoms. The Se–Se bond length is 2.51 Å. In the eighteenth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids. In the nineteenth Se+1.58- site, Se+1.58- is bonded to five Nd3+ atoms to form a mixture of distorted edge and corner-sharing SeNd5 trigonal bipyramids.

36 MATERIALS SCIENCE↗