Sc5Ga3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 6-coordinate geometry to six equivalent Ga(1) atoms. In the second Sc site, Sc(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 Sc(1) and five equivalent Sc(2) atoms.
Sc5Ga3 crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 6-coordinate geometry to six equivalent Ga(1) atoms. All Sc(1)-Ga(1) bond lengths are 2.89 Å. In the second Sc site, Sc(2) is bonded in a 5-coordinate geometry to five equivalent Ga(1) atoms. There are a spread of Sc(2)-Ga(1) bond distances ranging from 2.81-3.22 Å. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Sc(1) and five equivalent Sc(2) atoms.