Materials Data on Sr(Cu2Sn)2 by Materials Project

Abstract

SrCu4Sn2 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to eight equivalent Cu and eight equivalent Sn atoms. All Sr–Cu bond lengths are 3.27 Å. All Sr–Sn bond lengths are 3.65 Å. Cu is bonded in a 9-coordinate geometry to two equivalent Sr, three equivalent Cu, and four equivalent Sn atoms. There are one shorter (2.52 Å) and two longer (2.63 Å) Cu–Cu bond lengths. There are a spread of Cu–Sn bond distances ranging from 2.67–2.75 Å. Sn is bonded in a 12-coordinate geometry to four equivalent Sr and eight equivalent Cu atoms.