Hf6CoGa2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 4-coordinate geometry to two equivalent Co(1) and two equivalent Ga(1) atoms. In the second Hf site, Hf(2) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Ga(1) atoms. Co(1) is bonded in a 6-coordinate geometry to three equivalent Hf(2) and six equivalent Hf(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Hf(2) atoms.
Hf6CoGa2 crystallizes in the hexagonal P-62m space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 4-coordinate geometry to two equivalent Co(1) and two equivalent Ga(1) atoms. Both Hf(1)-Co(1) bond lengths are 2.53 Å. Both Hf(1)-Ga(1) bond lengths are 2.95 Å. In the second Hf site, Hf(2) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Ga(1) atoms. The Hf(2)-Co(1) bond length is 3.09 Å. All Hf(2)-Ga(1) bond lengths are 2.88 Å. Co(1) is bonded in a 6-coordinate geometry to three equivalent Hf(2) and six equivalent Hf(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Hf(2) atoms.