Lu5Ir3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 6-coordinate geometry to six equivalent Ir(1) atoms. In the second Lu site, Lu(2) is bonded in a 5-coordinate geometry to five equivalent Ir(1) atoms. Ir(1) is bonded in a 9-coordinate geometry to four equivalent Lu(1) and five equivalent Lu(2) atoms.
Lu5Ir3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 6-coordinate geometry to six equivalent Ir(1) atoms. All Lu(1)-Ir(1) bond lengths are 2.94 Å. In the second Lu site, Lu(2) is bonded in a 5-coordinate geometry to five equivalent Ir(1) atoms. There are a spread of Lu(2)-Ir(1) bond distances ranging from 2.81-3.23 Å. Ir(1) is bonded in a 9-coordinate geometry to four equivalent Lu(1) and five equivalent Lu(2) atoms.