Materials Data on Cs(FeSb)2 by Materials Project
Cs(FeSb)2 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Cs1+ is bonded to four equivalent Cs1+ and eight equivalent Sb3- atoms to form a mixture of distorted corner and face-sharing CsCs4Sb8 cuboctahedra. There are two shorter (3.68 Å) and two longer (3.70 Å) Cs–Cs bond lengths. All Cs–Sb bond lengths are 3.87 Å. Fe+2.50+ is bonded in a 4-coordinate geometry to four equivalent Sb3- atoms. All Fe–Sb bond lengths are 2.62 Å. Sb3- is bonded in a 8-coordinate geometry to four equivalent Cs1+ and four equivalent Fe+2.50+ atoms.
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