Dy4NiGa12 crystallizes in the cubic Im-3m space group. Dy(1) is bonded to six equivalent Ga(1) and six equivalent Ga(2) atoms to form DyGa12 cuboctahedra that share corners with twelve equivalent Dy(1)Ga12 cuboctahedra, edges with twelve equivalent Ga(1)Dy4Ga8 cuboctahedra, faces with six equivalent Dy(1)Ga12 cuboctahedra, faces with six equivalent Ga(1)Dy4Ga8 cuboctahedra, and faces with two equivalent Ni(1)Ga6 octahedra. Ni(1) is bonded to six equivalent Ga(2) atoms to form NiGa6 octahedra that share corners with twenty-four equivalent Ga(1)Dy4Ga8 cuboctahedra and faces with eight equivalent Dy(1)Ga12 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to four equivalent Dy(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted GaDy4Ga8 cuboctahedra that share corners with four equivalent Ga(1)Dy4Ga8 cuboctahedra, corners with four equivalent Ni(1)Ga6 octahedra, edges with eight equivalent Dy(1)Ga12 cuboctahedra, edges with eight equivalent Ga(1)Dy4Ga8 cuboctahedra, faces with four equivalent Dy(1)Ga12 cuboctahedra, and faces with six equivalent Ga(1)Dy4Ga8 cuboctahedra. The corner-sharing octahedral tilt angles are 50°. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to four equivalent Dy(1), one Ni(1), and four equivalent Ga(1) atoms.
Dy4NiGa12 crystallizes in the cubic Im-3m space group. Dy(1) is bonded to six equivalent Ga(1) and six equivalent Ga(2) atoms to form DyGa12 cuboctahedra that share corners with twelve equivalent Dy(1)Ga12 cuboctahedra, edges with twelve equivalent Ga(1)Dy4Ga8 cuboctahedra, faces with six equivalent Dy(1)Ga12 cuboctahedra, faces with six equivalent Ga(1)Dy4Ga8 cuboctahedra, and faces with two equivalent Ni(1)Ga6 octahedra. All Dy(1)-Ga(1) bond lengths are 3.00 Å. All Dy(1)-Ga(2) bond lengths are 3.02 Å. Ni(1) is bonded to six equivalent Ga(2) atoms to form NiGa6 octahedra that share corners with twenty-four equivalent Ga(1)Dy4Ga8 cuboctahedra and faces with eight equivalent Dy(1)Ga12 cuboctahedra. All Ni(1)-Ga(2) bond lengths are 2.44 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to four equivalent Dy(1), four equivalent Ga(1), and four equivalent Ga(2) atoms to form distorted GaDy4Ga8 cuboctahedra that share corners with four equivalent Ga(1)Dy4Ga8 cuboctahedra, corners with four equivalent Ni(1)Ga6 octahedra, edges with eight equivalent Dy(1)Ga12 cuboctahedra, edges with eight equivalent Ga(1)Dy4Ga8 cuboctahedra, faces with four equivalent Dy(1)Ga12 cuboctahedra, and faces with six equivalent Ga(1)Dy4Ga8 cuboctahedra. The corner-sharing octahedral tilt angles are 50°. All Ga(1)-Ga(1) bond lengths are 3.00 Å. All Ga(1)-Ga(2) bond lengths are 2.79 Å. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to four equivalent Dy(1), one Ni(1), and four equivalent Ga(1) atoms.