CuGa5Te8 crystallizes in the tetragonal P-42m space group. Cu(1) is bonded to four equivalent Te(2) atoms to form CuTe4 tetrahedra that share corners with eight equivalent Ga(1)Te4 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent Te(1) and two equivalent Te(2) atoms to form GaTe4 tetrahedra that share corners with two equivalent Cu(1)Te4 tetrahedra, corners with two equivalent Ga(2)Te4 tetrahedra, and corners with four equivalent Ga(1)Te4 tetrahedra. In the second Ga site, Ga(2) is bonded to four equivalent Te(1) atoms to form corner-sharing GaTe4 tetrahedra. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a trigonal non-coplanar geometry to one Ga(2) and two equivalent Ga(1) atoms. In the second Te site, Te(2) is bonded in a trigonal non-coplanar geometry to one Cu(1) and two equivalent Ga(1) atoms.
CuGa5Te8 crystallizes in the tetragonal P-42m space group. Cu(1) is bonded to four equivalent Te(2) atoms to form CuTe4 tetrahedra that share corners with eight equivalent Ga(1)Te4 tetrahedra. All Cu(1)-Te(2) bond lengths are 2.57 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent Te(1) and two equivalent Te(2) atoms to form GaTe4 tetrahedra that share corners with two equivalent Cu(1)Te4 tetrahedra, corners with two equivalent Ga(2)Te4 tetrahedra, and corners with four equivalent Ga(1)Te4 tetrahedra. Both Ga(1)-Te(1) bond lengths are 2.69 Å. Both Ga(1)-Te(2) bond lengths are 2.62 Å. In the second Ga site, Ga(2) is bonded to four equivalent Te(1) atoms to form corner-sharing GaTe4 tetrahedra. All Ga(2)-Te(1) bond lengths are 2.65 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a trigonal non-coplanar geometry to one Ga(2) and two equivalent Ga(1) atoms. In the second Te site, Te(2) is bonded in a trigonal non-coplanar geometry to one Cu(1) and two equivalent Ga(1) atoms.