Materials Data on SmSn2 by Materials Project
SmSn2 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Sm is bonded in a 10-coordinate geometry to ten Sn atoms. There are a spread of Sm–Sn bond distances ranging from 3.22–3.55 Å. There are three inequivalent Sn sites. In the first Sn site, Sn is bonded in a distorted square co-planar geometry to four equivalent Sm atoms. In the second Sn site, Sn is bonded in a distorted square co-planar geometry to four equivalent Sm atoms. In the third Sn site, Sn is bonded in a 12-coordinate geometry to six equivalent Sm atoms.
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