Dy(CuAl)6 crystallizes in the orthorhombic Immm space group. Dy(1) is bonded in a 20-coordinate geometry to four equivalent Cu(2), eight equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent Dy(1), two equivalent Cu(1), two equivalent Cu(2), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Dy(1), four equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms to form a mixture of distorted corner, face, and edge-sharing CuDy2Al6Cu4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Dy(1), two equivalent Cu(2), four equivalent Cu(1), one Al(1), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a 8-coordinate geometry to one Dy(1), two equivalent Cu(2), four equivalent Cu(1), one Al(2), and two equivalent Al(3) atoms. In the third Al site, Al(3) is bonded in a 12-coordinate geometry to two equivalent Dy(1), two equivalent Cu(2), four equivalent Cu(1), two equivalent Al(1), and two equivalent Al(2) atoms.
Dy(CuAl)6 crystallizes in the orthorhombic Immm space group. Dy(1) is bonded in a 20-coordinate geometry to four equivalent Cu(2), eight equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms. All Dy(1)-Cu(2) bond lengths are 3.17 Å. All Dy(1)-Cu(1) bond lengths are 3.29 Å. Both Dy(1)-Al(1) bond lengths are 3.03 Å. Both Dy(1)-Al(2) bond lengths are 2.96 Å. All Dy(1)-Al(3) bond lengths are 3.05 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent Dy(1), two equivalent Cu(1), two equivalent Cu(2), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. Both Cu(1)-Cu(1) bond lengths are 2.49 Å. Both Cu(1)-Cu(2) bond lengths are 2.51 Å. Both Cu(1)-Al(1) bond lengths are 2.62 Å. Both Cu(1)-Al(2) bond lengths are 2.63 Å. Both Cu(1)-Al(3) bond lengths are 2.51 Å. In the second Cu site, Cu(2) is bonded to two equivalent Dy(1), four equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms to form a mixture of distorted corner, face, and edge-sharing CuDy2Al6Cu4 cuboctahedra. Both Cu(2)-Al(1) bond lengths are 2.65 Å. Both Cu(2)-Al(2) bond lengths are 2.68 Å. Both Cu(2)-Al(3) bond lengths are 2.64 Å. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Dy(1), two equivalent Cu(2), four equivalent Cu(1), one Al(1), and two equivalent Al(3) atoms. The Al(1)-Al(1) bond length is 2.62 Å. Both Al(1)-Al(3) bond lengths are 2.80 Å. In the second Al site, Al(2) is bonded in a 8-coordinate geometry to one Dy(1), two equivalent Cu(2), four equivalent Cu(1), one Al(2), and two equivalent Al(3) atoms. The Al(2)-Al(2) bond length is 2.63 Å. Both Al(2)-Al(3) bond lengths are 2.90 Å. In the third Al site, Al(3) is bonded in a 12-coordinate geometry to two equivalent Dy(1), two equivalent Cu(2), four equivalent Cu(1), two equivalent Al(1), and two equivalent Al(2) atoms.