Materials Data on Cu2GeS4 by Materials Project
Cu2GeS4 crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. Cu2+ is bonded to four equivalent S2- atoms to form CuS4 tetrahedra that share corners with four equivalent CuS4 tetrahedra and corners with four equivalent GeS4 tetrahedra. All Cu–S bond lengths are 2.27 Å. Ge4+ is bonded to four equivalent S2- atoms to form GeS4 tetrahedra that share corners with eight equivalent CuS4 tetrahedra. All Ge–S bond lengths are 2.26 Å. S2- is bonded in a trigonal non-coplanar geometry to two equivalent Cu2+ and one Ge4+ atom.
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