Materials Data on Cu2SnSe4 by Materials Project
Cu2SnSe4 crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. Cu2+ is bonded to four equivalent Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent CuSe4 tetrahedra and corners with four equivalent SnSe4 tetrahedra. All Cu–Se bond lengths are 2.39 Å. Sn4+ is bonded to four equivalent Se2- atoms to form SnSe4 tetrahedra that share corners with eight equivalent CuSe4 tetrahedra. All Sn–Se bond lengths are 2.61 Å. Se2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu2+ and one Sn4+ atom.
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