Materials Data on Sr(CuSn)2 by Materials Project

Abstract

SrCu2Sn2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sr is bonded in a 10-coordinate geometry to six equivalent Cu and eight equivalent Sn atoms. There are two shorter (3.22 Å) and four longer (3.38 Å) Sr–Cu bond lengths. There are four shorter (3.53 Å) and four longer (3.72 Å) Sr–Sn bond lengths. Cu is bonded in a 9-coordinate geometry to three equivalent Sr, two equivalent Cu, and four equivalent Sn atoms. Both Cu–Cu bond lengths are 2.59 Å. There are a spread of Cu–Sn bond distances ranging from 2.64–2.70 Å. Sn is bonded in a 9-coordinate geometry to four equivalent Sr, four equivalent Cu, and one Sn atom. The Sn–Sn bond length is 3.15 Å.