Materials Data on SrMnSb2 by Materials Project

Abstract

SrMnSb2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight Sb2- atoms. There are a spread of Sr–Sb bond distances ranging from 3.45–3.53 Å. Mn2+ is bonded to four equivalent Sb2- atoms to form a mixture of corner and edge-sharing MnSb4 tetrahedra. There are a spread of Mn–Sb bond distances ranging from 2.72–2.75 Å. There are two inequivalent Sb2- sites. In the first Sb2- site, Sb2- is bonded in a 8-coordinate geometry to four equivalent Sr2+ and four equivalent Mn2+ atoms. In the second Sb2- site, Sb2- is bonded in a 8-coordinate geometry to four equivalent Sr2+ and four equivalent Sb2- atoms. There are two shorter (2.95 Å) and two longer (3.41 Å) Sb–Sb bond lengths.