Materials Data on K3Sb by Materials Project
K3Sb is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a body-centered cubic geometry to eight equivalent K1+ atoms. All K–K bond lengths are 3.71 Å. In the second K1+ site, K1+ is bonded to four equivalent K1+ and four equivalent Sb3- atoms to form a mixture of corner, edge, and face-sharing KK4Sb4 tetrahedra. All K–Sb bond lengths are 3.71 Å. Sb3- is bonded in a body-centered cubic geometry to eight equivalent K1+ atoms.
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