Materials Data on K2VCl6 by Materials Project
K2VCl6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. K1+ is bonded to twelve equivalent Cl1- atoms to form KCl12 cuboctahedra that share corners with twelve equivalent KCl12 cuboctahedra, faces with six equivalent KCl12 cuboctahedra, and faces with four equivalent VCl6 octahedra. All K–Cl bond lengths are 3.52 Å. V4+ is bonded to six equivalent Cl1- atoms to form VCl6 octahedra that share faces with eight equivalent KCl12 cuboctahedra. All V–Cl bond lengths are 2.32 Å. Cl1- is bonded in a distorted single-bond geometry to four equivalent K1+ and one V4+ atom.
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