Materials Data on CsSbF6 by Materials Project
CsSbF6 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Cs1+ is bonded to twelve equivalent F1- atoms to form CsF12 cuboctahedra that share corners with six equivalent SbF6 octahedra, edges with six equivalent CsF12 cuboctahedra, and faces with two equivalent SbF6 octahedra. The corner-sharing octahedral tilt angles are 36°. There are six shorter (3.20 Å) and six longer (3.43 Å) Cs–F bond lengths. Sb5+ is bonded to six equivalent F1- atoms to form SbF6 octahedra that share corners with six equivalent CsF12 cuboctahedra and faces with two equivalent CsF12 cuboctahedra. All Sb–F bond lengths are 1.92 Å. F1- is bonded in a distorted single-bond geometry to two equivalent Cs1+ and one Sb5+ atom.
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