Ho6Ni2Ga crystallizes in the orthorhombic Immm space group. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 4-coordinate geometry to one Ni(1), one Ni(2), one Ga(1), and one Ga(2) atom. In the second Ho site, Ho(2) is bonded in a 4-coordinate geometry to one Ni(1), two equivalent Ni(2), one Ga(1), and one Ga(2) atom. In the third Ho site, Ho(3) is bonded in a 4-coordinate geometry to one Ni(2), two equivalent Ni(1), and one Ga(1) atom. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 8-coordinate geometry to two equivalent Ho(1), two equivalent Ho(2), and four equivalent Ho(3) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), four equivalent Ho(2), and one Ni(2) atom. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a cuboctahedral geometry to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Ho(3) atoms. In the second Ga site, Ga(2) is bonded in a body-centered cubic geometry to four equivalent Ho(1) and four equivalent Ho(2) atoms.
Ho6Ni2Ga crystallizes in the orthorhombic Immm space group. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 4-coordinate geometry to one Ni(1), one Ni(2), one Ga(1), and one Ga(2) atom. The Ho(1)-Ni(1) bond length is 2.72 Å. The Ho(1)-Ni(2) bond length is 3.22 Å. The Ho(1)-Ga(1) bond length is 3.21 Å. The Ho(1)-Ga(2) bond length is 2.96 Å. In the second Ho site, Ho(2) is bonded in a 4-coordinate geometry to one Ni(1), two equivalent Ni(2), one Ga(1), and one Ga(2) atom. The Ho(2)-Ni(1) bond length is 3.08 Å. Both Ho(2)-Ni(2) bond lengths are 2.87 Å. The Ho(2)-Ga(1) bond length is 3.63 Å. The Ho(2)-Ga(2) bond length is 3.13 Å. In the third Ho site, Ho(3) is bonded in a 4-coordinate geometry to one Ni(2), two equivalent Ni(1), and one Ga(1) atom. The Ho(3)-Ni(2) bond length is 2.69 Å. Both Ho(3)-Ni(1) bond lengths are 2.84 Å. The Ho(3)-Ga(1) bond length is 3.28 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 8-coordinate geometry to two equivalent Ho(1), two equivalent Ho(2), and four equivalent Ho(3) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), four equivalent Ho(2), and one Ni(2) atom. The Ni(2)-Ni(2) bond length is 2.38 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a cuboctahedral geometry to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Ho(3) atoms. In the second Ga site, Ga(2) is bonded in a body-centered cubic geometry to four equivalent Ho(1) and four equivalent Ho(2) atoms.