Materials Data on SrSn3 by Materials Project
SrSn3 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded to twelve Sn atoms to form a mixture of distorted corner and face-sharing SrSn12 cuboctahedra. There are a spread of Sr–Sn bond distances ranging from 3.50–3.63 Å. In the second Sr site, Sr is bonded to twelve Sn atoms to form a mixture of corner and face-sharing SrSn12 cuboctahedra. There are a spread of Sr–Sn bond distances ranging from 3.47–3.56 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 4-coordinate geometry to four Sr and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.28 Å. In the second Sn site, Sn is bonded in a 4-coordinate geometry to four Sr and four Sn atoms. Both Sn–Sn bond lengths are 3.06 Å.