Lu5Ga3 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 Ga(1) atoms. In the second Lu site, Lu(2) is bonded in a 5-coordinate geometry to five equivalent Ga(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Lu(1) and five equivalent Lu(2) atoms.
Lu5Ga3 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 Ga(1) atoms. All Lu(1)-Ga(1) bond lengths are 3.00 Å. In the second Lu site, Lu(2) is bonded in a 5-coordinate geometry to five equivalent Ga(1) atoms. There are a spread of Lu(2)-Ga(1) bond distances ranging from 2.92-3.40 Å. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Lu(1) and five equivalent Lu(2) atoms.