Materials Data on SrNiSn3 by Materials Project
SrNiSn3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Sr is bonded in a 12-coordinate geometry to five equivalent Ni and twelve Sn atoms. There are one shorter (3.75 Å) and four longer (3.81 Å) Sr–Ni bond lengths. There are a spread of Sr–Sn bond distances ranging from 3.47–3.65 Å. Ni is bonded in a 5-coordinate geometry to five equivalent Sr and five Sn atoms. There are one shorter (2.51 Å) and four longer (2.59 Å) Ni–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 5-coordinate geometry to four equivalent Sr, one Ni, and four equivalent Sn atoms. All Sn–Sn bond lengths are 3.11 Å. In the second Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Sr, two equivalent Ni, and two equivalent Sn atoms.