Lu6CuTe2 crystallizes in the orthorhombic Pnma space group. There are six inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 4-coordinate geometry to two equivalent Te(1) and two equivalent Te(2) atoms. In the second Lu site, Lu(2) is bonded in a 5-coordinate geometry to three equivalent Cu(1) and two equivalent Te(1) atoms. In the third Lu site, Lu(3) is bonded in a 3-coordinate geometry to two equivalent Cu(1) and one Te(2) atom. In the fourth Lu site, Lu(4) is bonded in a 4-coordinate geometry to one Cu(1), one Te(1), and three equivalent Te(2) atoms. In the fifth Lu site, Lu(5) is bonded to two equivalent Cu(1), one Te(1), and two equivalent Te(2) atoms to form distorted edge-sharing LuCu2Te3 trigonal bipyramids. In the sixth Lu site, Lu(6) is bonded in a 1-coordinate geometry to one Cu(1) and one Te(1) atom. Cu(1) is bonded in a 9-coordinate geometry to one Lu(4), one Lu(6), two equivalent Lu(3), two equivalent Lu(5), and three equivalent Lu(2) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 7-coordinate geometry to one Lu(4), one Lu(5), one Lu(6), two equivalent Lu(1), and two equivalent Lu(2) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Lu(3), two equivalent Lu(1), two equivalent Lu(5), and three equivalent Lu(4) atoms.
Lu6CuTe2 crystallizes in the orthorhombic Pnma space group. There are six inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 4-coordinate geometry to two equivalent Te(1) and two equivalent Te(2) atoms. Both Lu(1)-Te(1) bond lengths are 3.08 Å. Both Lu(1)-Te(2) bond lengths are 3.09 Å. In the second Lu site, Lu(2) is bonded in a 5-coordinate geometry to three equivalent Cu(1) and two equivalent Te(1) atoms. There are two shorter (2.91 Å) and one longer (3.10 Å) Lu(2)-Cu(1) bond length. Both Lu(2)-Te(1) bond lengths are 3.18 Å. In the third Lu site, Lu(3) is bonded in a 3-coordinate geometry to two equivalent Cu(1) and one Te(2) atom. Both Lu(3)-Cu(1) bond lengths are 2.86 Å. The Lu(3)-Te(2) bond length is 3.20 Å. In the fourth Lu site, Lu(4) is bonded in a 4-coordinate geometry to one Cu(1), one Te(1), and three equivalent Te(2) atoms. The Lu(4)-Cu(1) bond length is 3.47 Å. The Lu(4)-Te(1) bond length is 3.03 Å. There are two shorter (3.15 Å) and one longer (3.26 Å) Lu(4)-Te(2) bond length. In the fifth Lu site, Lu(5) is bonded to two equivalent Cu(1), one Te(1), and two equivalent Te(2) atoms to form distorted edge-sharing LuCu2Te3 trigonal bipyramids. Both Lu(5)-Cu(1) bond lengths are 2.84 Å. The Lu(5)-Te(1) bond length is 3.04 Å. Both Lu(5)-Te(2) bond lengths are 3.12 Å. In the sixth Lu site, Lu(6) is bonded in a 1-coordinate geometry to one Cu(1) and one Te(1) atom. The Lu(6)-Cu(1) bond length is 3.34 Å. The Lu(6)-Te(1) bond length is 3.07 Å. Cu(1) is bonded in a 9-coordinate geometry to one Lu(4), one Lu(6), two equivalent Lu(3), two equivalent Lu(5), and three equivalent Lu(2) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 7-coordinate geometry to one Lu(4), one Lu(5), one Lu(6), two equivalent Lu(1), and two equivalent Lu(2) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Lu(3), two equivalent Lu(1), two equivalent Lu(5), and three equivalent Lu(4) atoms.