Cu2GeS3 is Chalcopyrite-like structured and crystallizes in the orthorhombic Imm2 space group. Cu(1) is bonded to one S(2) and three equivalent S(1) atoms to form CuS4 tetrahedra that share corners with five equivalent Ge(1)S4 tetrahedra and corners with seven equivalent Cu(1)S4 tetrahedra. Ge(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form GeS4 tetrahedra that share corners with two equivalent Ge(1)S4 tetrahedra and corners with ten equivalent Cu(1)S4 tetrahedra. There are two inequivalent S sites. In the first S site, S(2) is bonded to two equivalent Cu(1) and two equivalent Ge(1) atoms to form SCu2Ge2 tetrahedra that share corners with two equivalent S(2)Cu2Ge2 tetrahedra and corners with ten equivalent S(1)Cu3Ge tetrahedra. In the second S site, S(1) is bonded to three equivalent Cu(1) and one Ge(1) atom to form SCu3Ge tetrahedra that share corners with five equivalent S(2)Cu2Ge2 tetrahedra and corners with seven equivalent S(1)Cu3Ge tetrahedra.
Cu2GeS3 is Chalcopyrite-like structured and crystallizes in the orthorhombic Imm2 space group. Cu(1) is bonded to one S(2) and three equivalent S(1) atoms to form CuS4 tetrahedra that share corners with five equivalent Ge(1)S4 tetrahedra and corners with seven equivalent Cu(1)S4 tetrahedra. The Cu(1)-S(2) bond length is 2.30 Å. There are two shorter (2.27 Å) and one longer (2.28 Å) Cu(1)-S(1) bond length. Ge(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form GeS4 tetrahedra that share corners with two equivalent Ge(1)S4 tetrahedra and corners with ten equivalent Cu(1)S4 tetrahedra. Both Ge(1)-S(1) bond lengths are 2.21 Å. Both Ge(1)-S(2) bond lengths are 2.36 Å. There are two inequivalent S sites. In the first S site, S(2) is bonded to two equivalent Cu(1) and two equivalent Ge(1) atoms to form SCu2Ge2 tetrahedra that share corners with two equivalent S(2)Cu2Ge2 tetrahedra and corners with ten equivalent S(1)Cu3Ge tetrahedra. In the second S site, S(1) is bonded to three equivalent Cu(1) and one Ge(1) atom to form SCu3Ge tetrahedra that share corners with five equivalent S(2)Cu2Ge2 tetrahedra and corners with seven equivalent S(1)Cu3Ge tetrahedra.