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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cs4P2PdSe8 by Materials Project

Cs4PdP2Se8 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.72–4.26 Å. In the second Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.71–4.22 Å. In the third Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.74–4.19 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.72–4.18 Å. In the fifth Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.64–4.30 Å. In the sixth Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.64–4.30 Å. In the seventh Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.62–4.27 Å. In the eighth Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.65–4.25 Å. There are two inequivalent Pd2+ sites. In the first Pd2+ site, Pd2+ is bonded in a square co-planar geometry to four Se2- atoms. There are two shorter (2.48 Å) and two longer (2.49 Å) Pd–Se bond lengths. In the second Pd2+ site, Pd2+ is bonded in a square co-planar geometry to four Se2- atoms. There are two shorter (2.48 Å) and two longer (2.49 Å) Pd–Se bond lengths. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of P–Se bond distances ranging from 2.19–2.29 Å. In the second P5+ site, P5+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of P–Se bond distances ranging from 2.18–2.29 Å. In the third P5+ site, P5+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of P–Se bond distances ranging from 2.19–2.29 Å. In the fourth P5+ site, P5+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of P–Se bond distances ranging from 2.19–2.29 Å. There are sixteen inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the second Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the third Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the fourth Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the fifth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the sixth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the seventh Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the eighth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the ninth Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the tenth Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the eleventh Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the twelfth Se2- site, Se2- is bonded in a 2-coordinate geometry to four Cs1+, one Pd2+, and one P5+ atom. In the thirteenth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the fourteenth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the fifteenth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom. In the sixteenth Se2- site, Se2- is bonded in a 1-coordinate geometry to five Cs1+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs10P4PdSe16 by Materials Project

Cs10PdP4Se16 crystallizes in the tetragonal P-42c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.69–4.16 Å. In the second Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to four equivalent Se2- atoms. All Cs–Se bond lengths are 3.69 Å. In the third Cs1+ site, Cs1+ is bonded to eight Se2- atoms to form distorted CsSe8 hexagonal bipyramids that share corners with six CsSe8 hexagonal bipyramids, edges with two equivalent CsSe8 hexagonal bipyramids, edges with four PSe4 tetrahedra, and faces with two equivalent CsSe8 hexagonal bipyramids. There are a spread of Cs–Se bond distances ranging from 3.72–4.07 Å. In the fourth Cs1+ site, Cs1+ is bonded to eight Se2- atoms to form distorted CsSe8 hexagonal bipyramids that share corners with four equivalent CsSe8 hexagonal bipyramids, corners with four PSe4 tetrahedra, edges with four equivalent CsSe8 hexagonal bipyramids, edges with two equivalent PSe4 tetrahedra, and faces with five CsSe8 hexagonal bipyramids. There are a spread of Cs–Se bond distances ranging from 3.72–4.17 Å. Pd2+ is bonded in a square co-planar geometry to four equivalent Se2- atoms. All Pd–Se bond lengths are 2.49 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four Se2- atoms to form PSe4 tetrahedra that share corners with two equivalent CsSe8 hexagonal bipyramids and edges with six CsSe8 hexagonal bipyramids. There are two shorter (2.18 Å) and two longer (2.28 Å) P–Se bond lengths. In the second P5+ site, P5+ is bonded to four Se2- atoms to form PSe4 tetrahedra that share corners with two equivalent CsSe8 hexagonal bipyramids and edges with four equivalent CsSe8 hexagonal bipyramids. There are two shorter (2.22 Å) and two longer (2.25 Å) P–Se bond lengths. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted single-bond geometry to five Cs1+ and one P5+ atom. In the second Se2- site, Se2- is bonded to five Cs1+ and one P5+ atom to form a mixture of distorted corner, edge, and face-sharing SeCs5P octahedra. The corner-sharing octahedral tilt angles are 2°. In the third Se2- site, Se2- is bonded in a distorted single-bond geometry to five Cs1+ and one P5+ atom. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to three Cs1+, one Pd2+, and one P5+ atom.

36 MATERIALS SCIENCE↗