Lu3CoGa5 crystallizes in the hexagonal P-62m space group. Lu(1) is bonded in a 11-coordinate geometry to one Co(1), four equivalent Ga(2), and six equivalent Ga(1) atoms. Co(1) is bonded in a 9-coordinate geometry to three equivalent Lu(1) and six equivalent Ga(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to six equivalent Lu(1), two equivalent Co(1), two equivalent Ga(1), and two equivalent Ga(2) atoms to form a mixture of distorted corner, edge, and face-sharing GaLu6Ga4Co2 cuboctahedra. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to six equivalent Lu(1) and three equivalent Ga(1) atoms.
Lu3CoGa5 crystallizes in the hexagonal P-62m space group. Lu(1) is bonded in a 11-coordinate geometry to one Co(1), four equivalent Ga(2), and six equivalent Ga(1) atoms. The Lu(1)-Co(1) bond length is 2.72 Å. All Lu(1)-Ga(2) bond lengths are 2.90 Å. There are four shorter (3.13 Å) and two longer (3.20 Å) Lu(1)-Ga(1) bond lengths. Co(1) is bonded in a 9-coordinate geometry to three equivalent Lu(1) and six equivalent Ga(1) atoms. All Co(1)-Ga(1) bond lengths are 2.58 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to six equivalent Lu(1), two equivalent Co(1), two equivalent Ga(1), and two equivalent Ga(2) atoms to form a mixture of distorted corner, edge, and face-sharing GaLu6Ga4Co2 cuboctahedra. Both Ga(1)-Ga(1) bond lengths are 2.72 Å. Both Ga(1)-Ga(2) bond lengths are 2.65 Å. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to six equivalent Lu(1) and three equivalent Ga(1) atoms.