HfNiGa crystallizes in the hexagonal P-62m space group. Hf(1) is bonded in a 11-coordinate geometry to one Ni(2), four equivalent Ni(1), and six equivalent Ga(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(2) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Ga(1) atoms. In the second Ni site, Ni(1) is bonded in a 9-coordinate geometry to six equivalent Hf(1) and three equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to six equivalent Hf(1), two equivalent Ni(1), and two equivalent Ni(2) atoms.
HfNiGa crystallizes in the hexagonal P-62m space group. Hf(1) is bonded in a 11-coordinate geometry to one Ni(2), four equivalent Ni(1), and six equivalent Ga(1) atoms. The Hf(1)-Ni(2) bond length is 2.74 Å. All Hf(1)-Ni(1) bond lengths are 2.68 Å. There are two shorter (2.85 Å) and four longer (2.94 Å) Hf(1)-Ga(1) bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni(2) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Ga(1) atoms. All Ni(2)-Ga(1) bond lengths are 2.45 Å. In the second Ni site, Ni(1) is bonded in a 9-coordinate geometry to six equivalent Hf(1) and three equivalent Ga(1) atoms. All Ni(1)-Ga(1) bond lengths are 2.56 Å. Ga(1) is bonded in a 10-coordinate geometry to six equivalent Hf(1), two equivalent Ni(1), and two equivalent Ni(2) atoms.