Materials Data on SrZnSb2 by Materials Project

Abstract

SrZnSb2 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 3.44–3.50 Å. Zn2+ is bonded to four equivalent Sb2- atoms to form a mixture of corner and edge-sharing ZnSb4 tetrahedra. There are two shorter (2.79 Å) and two longer (2.80 Å) Zn–Sb bond lengths. 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 Sb2- atoms. There are two shorter (2.99 Å) and two longer (3.31 Å) Sb–Sb bond lengths. In the second Sb2- site, Sb2- is bonded in a 8-coordinate geometry to four equivalent Sr2+ and four equivalent Zn2+ atoms.