Materials Data on KBi3F10 by Materials Project
KBi3F10 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. K1+ is bonded in a tetrahedral geometry to four equivalent F1- atoms. All K–F bond lengths are 2.83 Å. Bi3+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are four shorter (2.30 Å) and four longer (2.49 Å) Bi–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Bi3+ atoms. In the second F1- site, F1- is bonded to one K1+ and three equivalent Bi3+ atoms to form a mixture of edge and corner-sharing FKBi3 tetrahedra.
36 MATERIALS SCIENCE↗