Materials Data on Cs3VF6 by Materials Project

Abstract

Cs3VF6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded to twelve equivalent F1- atoms to form distorted CsF12 cuboctahedra that share corners with twelve equivalent CsF12 cuboctahedra, faces with six equivalent CsF12 cuboctahedra, faces with four equivalent CsF6 octahedra, and faces with four equivalent VF6 octahedra. All Cs–F bond lengths are 3.44 Å. In the second Cs1+ site, Cs1+ is bonded to six equivalent F1- atoms to form CsF6 octahedra that share corners with six equivalent VF6 octahedra and faces with eight equivalent CsF12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Cs–F bond lengths are 2.84 Å. V3+ is bonded to six equivalent F1- atoms to form VF6 octahedra that share corners with six equivalent CsF6 octahedra and faces with eight equivalent CsF12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All V–F bond lengths are 1.99 Å. F1- is bonded in a 2-coordinate geometry to five Cs1+ and one V3+ atom.