Materials Data on SrSn4 by Materials Project

Abstract

SrSn4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sr is bonded in a 11-coordinate geometry to thirteen Sn atoms. There are a spread of Sr–Sn bond distances ranging from 3.48–3.71 Å. There are three inequivalent Sn sites. In the first Sn site, Sn is bonded in a 11-coordinate geometry to three equivalent Sr and eight Sn atoms. There are four shorter (3.32 Å) and four longer (3.35 Å) Sn–Sn bond lengths. In the second Sn site, Sn is bonded in a 4-coordinate geometry to four equivalent Sr and six Sn atoms. Both Sn–Sn bond lengths are 3.46 Å. In the third Sn site, Sn is bonded in a 2-coordinate geometry to three equivalent Sr and six Sn atoms. There are one shorter (2.95 Å) and two longer (3.11 Å) Sn–Sn bond lengths.