Materials Data on Ba6SrI14 by Materials Project

Abstract

Ba6SrI14 crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 5-coordinate geometry to six I1- atoms. There are a spread of Ba–I bond distances ranging from 3.32–4.17 Å. In the second Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to seven I1- atoms. There are a spread of Ba–I bond distances ranging from 3.43–3.71 Å. Sr2+ is bonded in an octahedral geometry to six I1- atoms. There are two shorter (3.21 Å) and four longer (3.32 Å) Sr–I bond lengths. There are five inequivalent I1- sites. In the first I1- site, I1- is bonded in a trigonal non-coplanar geometry to three Ba2+ atoms. In the second I1- site, I1- is bonded in a 4-coordinate geometry to three Ba2+ and one Sr2+ atom. In the third I1- site, I1- is bonded in a 3-coordinate geometry to three Ba2+ and one Sr2+ atom. In the fourth I1- site, I1- is bonded in an L-shaped geometry to two equivalent Ba2+ atoms. In the fifth I1- site, I1- is bonded in a water-like geometry to two equivalent Ba2+ atoms.