Materials Data on USn2 by Materials Project
USn2 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. U is bonded in a 10-coordinate geometry to ten Sn atoms. There are a spread of U–Sn bond distances ranging from 3.18–3.42 Å. There are three inequivalent Sn sites. In the first Sn site, Sn is bonded in a 12-coordinate geometry to six equivalent U and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.09 Å. In the second Sn site, Sn is bonded in a distorted square co-planar geometry to four equivalent U atoms. In the third Sn site, Sn is bonded in a 4-coordinate geometry to four equivalent U atoms.
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