Ga3(Ni10B3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 2-coordinate geometry to one Ga(1) and two equivalent B(1) atoms. In the second Ni site, Ni(2) is bonded to one Ga(2) and three equivalent B(1) atoms to form a mixture of distorted corner and edge-sharing NiGaB3 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a cuboctahedral geometry to twelve equivalent Ni(1) atoms. In the second Ga site, Ga(2) is bonded in a distorted tetrahedral geometry to four equivalent Ni(2) atoms. B(1) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms.
Ga3(Ni10B3)2 crystallizes in the cubic Fm-3m space group. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 2-coordinate geometry to one Ga(1) and two equivalent B(1) atoms. The Ni(1)-Ga(1) bond length is 2.48 Å. Both Ni(1)-B(1) bond lengths are 2.08 Å. In the second Ni site, Ni(2) is bonded to one Ga(2) and three equivalent B(1) atoms to form a mixture of distorted corner and edge-sharing NiGaB3 tetrahedra. The Ni(2)-Ga(2) bond length is 2.38 Å. All Ni(2)-B(1) bond lengths are 2.05 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a cuboctahedral geometry to twelve equivalent Ni(1) atoms. In the second Ga site, Ga(2) is bonded in a distorted tetrahedral geometry to four equivalent Ni(2) atoms. B(1) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms.