Materials Data on InSn2I5 by Materials Project
InSn2I5 crystallizes in the tetragonal I4/mcm space group. The structure is two-dimensional and consists of four indium, elemental molecules and two Sn2I5 sheets oriented in the (0, 0, 1) direction. In each Sn2I5 sheet, Sn2+ is bonded in a 4-coordinate geometry to four I1- atoms. There are two shorter (3.03 Å) and two longer (3.31 Å) Sn–I bond lengths. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a square co-planar geometry to four equivalent Sn2+ atoms. In the second I1- site, I1- is bonded in a single-bond geometry to one Sn2+ atom.
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