Materials Data on Nd2Ge2O7 by Materials Project
Nd2Ge2O7 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are twelve inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.36–2.85 Å. In the second Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.35–2.58 Å. In the third Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.35–2.81 Å. In the fourth Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.32–2.75 Å. In the fifth Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.37–2.91 Å. In the sixth Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.37–2.71 Å. In the seventh Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.37–2.77 Å. In the eighth Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.39–2.72 Å. In the ninth Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.33–2.81 Å. In the tenth Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.34–2.68 Å. In the eleventh Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Nd–O bond distances ranging from 2.35–2.71 Å. In the twelfth Nd3+ site, Nd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Nd–O bond distances ranging from 2.37–2.61 Å. There are twelve inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Ge–O bond distances ranging from 1.75–1.82 Å. In the second Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Ge–O bond distances ranging from 1.74–1.79 Å. In the third Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.75–1.88 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.89 Å. In the fifth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.79 Å. In the sixth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.83 Å. In the seventh Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.82 Å. In the eighth Ge4+ site, Ge4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Ge–O bond distances ranging from 1.75–1.81 Å. In the ninth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.82 Å. In the tenth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.89 Å. In the eleventh Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.74–1.79 Å. In the twelfth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.73–1.89 Å. There are forty-two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Nd3+ and two Ge4+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Nd3+ and two Ge4+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Nd3+ and one Ge4+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to two Nd3+ and one Ge4+ atom. In the eleventh O2- site, O2- is bonded in a 1-coordinate geometry to three Nd3+ and one Ge4+ atom. In the twelfth O2- site, O2- is bonded in a 1-coordinate geometry to three Nd3+ and one Ge4+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Nd3+ and one Ge4+ atom. In the fourteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the fifteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the sixteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Nd3+ and two Ge4+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Nd3+ and one Ge4+ atom. In the twentieth O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the twenty-second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to two Nd3+ and one Ge4+ atom. In the twenty-fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the twenty-sixth O2- site, O2- is bonded in a 3-coordinate geometry to two Nd3+ and one Ge4+ atom. In the twenty-seventh O2- site, O2- is bonded in a 1-coordinate geometry to two Nd3+ and one Ge4+ atom. In the twenty-eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the twenty-ninth O2- site, O2- is bonded in a 1-coordinate geometry to three Nd3+ and one Ge4+ atom. In the thirtieth O2- site, O2- is bonded in a 3-coordinate geometry to two Nd3+ and one Ge4+ atom. In the thirty-first O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom. In the thirty-second O2- site, O2- is bonded in a 3-coordinate geometry to two Nd3+ and one Ge4+ atom. In the thirty-third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the thirty-fourth O2- site, O2- is bonded in a trigonal planar geometry to two Nd3+ and one Ge4+ atom. In the thirty-fifth O2- site, O2- is bonded in a 3-coordinate geometry to three Nd3+ and one Ge4+ atom. In the thirty-sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two Ge4+ atoms. In the thirty-seventh O2- site, O2- is bonded in a 3-coordinate geometry to two Nd3+ and one Ge4+ atom. In the thirty-eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Nd3+ and two Ge4+ atoms. In the thirty-ninth O2- site, O2- is bonded in a 1-coordinate geometry to three Nd3+ and one Ge4+ atom. In the fortieth O2- site, O2- is bonded in a 3-coordinate geometry to two Nd3+ and one Ge4+ atom. In the forty-first O2- site, O2- is bonded in a 3-coordinate geometry to two Nd3+ and one Ge4+ atom. In the forty-second O2- site, O2- is bonded in a 4-coordinate geometry to three Nd3+ and one Ge4+ atom.