Materials Data on Cs6K3GaSb4 by Materials Project

Abstract

Cs6K3GaSb4 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Cs1+ is bonded in a 3-coordinate geometry to four equivalent Cs1+, one K1+, and five Sb3- atoms. There are two shorter (4.15 Å) and two longer (4.17 Å) Cs–Cs bond lengths. The Cs–K bond length is 3.84 Å. There are a spread of Cs–Sb bond distances ranging from 4.08–4.27 Å. K1+ is bonded in a 4-coordinate geometry to two equivalent Cs1+ and four Sb3- atoms. There are two shorter (3.64 Å) and two longer (3.72 Å) K–Sb bond lengths. Ga3+ is bonded in a trigonal planar geometry to three equivalent Sb3- atoms. All Ga–Sb bond lengths are 2.69 Å. There are two inequivalent Sb3- sites. In the first Sb3- site, Sb3- is bonded in a 1-coordinate geometry to eight equivalent Cs1+, two equivalent K1+, and one Ga3+ atom. In the second Sb3- site, Sb3- is bonded to six equivalent Cs1+ and six equivalent K1+ atoms to form face-sharing SbCs6K6 cuboctahedra.