Cu2CdGeS4 is Stannite-like structured and crystallizes in the orthorhombic Pmn2_1 space group. Cu(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form CuS4 tetrahedra that share corners with four equivalent Cu(1)S4 tetrahedra, corners with four equivalent Cd(1)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. Cd(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form CdS4 tetrahedra that share corners with four equivalent Ge(1)S4 tetrahedra and corners with eight equivalent Cu(1)S4 tetrahedra. Ge(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form GeS4 tetrahedra that share corners with four equivalent Cd(1)S4 tetrahedra and corners with eight equivalent Cu(1)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Cu(1), one Cd(1), and one Ge(1) atom to form corner-sharing SCdCu2Ge tetrahedra. In the second S site, S(2) is bonded to two equivalent Cu(1), one Cd(1), and one Ge(1) atom to form corner-sharing SCdCu2Ge tetrahedra. In the third S site, S(3) is bonded to two equivalent Cu(1), one Cd(1), and one Ge(1) atom to form corner-sharing SCdCu2Ge tetrahedra.
Cu2CdGeS4 is Stannite-like structured and crystallizes in the orthorhombic Pmn2_1 space group. Cu(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form CuS4 tetrahedra that share corners with four equivalent Cu(1)S4 tetrahedra, corners with four equivalent Cd(1)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. The Cu(1)-S(1) bond length is 2.31 Å. The Cu(1)-S(2) bond length is 2.29 Å. There is one shorter (2.29 Å) and one longer (2.32 Å) Cu(1)-S(3) bond length. Cd(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form CdS4 tetrahedra that share corners with four equivalent Ge(1)S4 tetrahedra and corners with eight equivalent Cu(1)S4 tetrahedra. The Cd(1)-S(1) bond length is 2.55 Å. The Cd(1)-S(2) bond length is 2.54 Å. Both Cd(1)-S(3) bond lengths are 2.56 Å. Ge(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form GeS4 tetrahedra that share corners with four equivalent Cd(1)S4 tetrahedra and corners with eight equivalent Cu(1)S4 tetrahedra. The Ge(1)-S(1) bond length is 2.25 Å. The Ge(1)-S(2) bond length is 2.25 Å. Both Ge(1)-S(3) bond lengths are 2.24 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Cu(1), one Cd(1), and one Ge(1) atom to form corner-sharing SCdCu2Ge tetrahedra. In the second S site, S(2) is bonded to two equivalent Cu(1), one Cd(1), and one Ge(1) atom to form corner-sharing SCdCu2Ge tetrahedra. In the third S site, S(3) is bonded to two equivalent Cu(1), one Cd(1), and one Ge(1) atom to form corner-sharing SCdCu2Ge tetrahedra.