Mg3Cd is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Cd(1) atoms to form MgMg8Cd4 cuboctahedra that share corners with twelve equivalent Mg(1)Mg8Cd4 cuboctahedra, edges with eight equivalent Cd(1)Mg12 cuboctahedra, edges with sixteen equivalent Mg(1)Mg8Cd4 cuboctahedra, faces with four equivalent Cd(1)Mg12 cuboctahedra, and faces with fourteen equivalent Mg(1)Mg8Cd4 cuboctahedra. Cd(1) is bonded to twelve equivalent Mg(1) atoms to form CdMg12 cuboctahedra that share corners with twelve equivalent Cd(1)Mg12 cuboctahedra, edges with twenty-four equivalent Mg(1)Mg8Cd4 cuboctahedra, faces with six equivalent Cd(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Mg8Cd4 cuboctahedra.
Mg3Cd is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Cd(1) atoms to form MgMg8Cd4 cuboctahedra that share corners with twelve equivalent Mg(1)Mg8Cd4 cuboctahedra, edges with eight equivalent Cd(1)Mg12 cuboctahedra, edges with sixteen equivalent Mg(1)Mg8Cd4 cuboctahedra, faces with four equivalent Cd(1)Mg12 cuboctahedra, and faces with fourteen equivalent Mg(1)Mg8Cd4 cuboctahedra. All Mg(1)-Mg(1) bond lengths are 3.12 Å. All Mg(1)-Cd(1) bond lengths are 3.12 Å. Cd(1) is bonded to twelve equivalent Mg(1) atoms to form CdMg12 cuboctahedra that share corners with twelve equivalent Cd(1)Mg12 cuboctahedra, edges with twenty-four equivalent Mg(1)Mg8Cd4 cuboctahedra, faces with six equivalent Cd(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Mg8Cd4 cuboctahedra.