SrCu2GeS4 crystallizes in the tetragonal I-42m space group. Sr(1) is bonded in a 8-coordinate geometry to eight equivalent S(1) atoms. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 trigonal pyramids that share corners with four equivalent Ge(1)S4 tetrahedra and corners with four equivalent Cu(1)S4 trigonal pyramids. Ge(1) is bonded to four equivalent S(1) atoms to form GeS4 tetrahedra that share corners with eight equivalent Cu(1)S4 trigonal pyramids. S(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), two equivalent Cu(1), and one Ge(1) atom.
SrCu2GeS4 crystallizes in the tetragonal I-42m space group. Sr(1) is bonded in a 8-coordinate geometry to eight equivalent S(1) atoms. There are four shorter (3.00 Å) and four longer (3.32 Å) Sr(1)-S(1) bond lengths. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 trigonal pyramids that share corners with four equivalent Ge(1)S4 tetrahedra and corners with four equivalent Cu(1)S4 trigonal pyramids. All Cu(1)-S(1) bond lengths are 2.39 Å. Ge(1) is bonded to four equivalent S(1) atoms to form GeS4 tetrahedra that share corners with eight equivalent Cu(1)S4 trigonal pyramids. All Ge(1)-S(1) bond lengths are 2.24 Å. S(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), two equivalent Cu(1), and one Ge(1) atom.