Sr3Mg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Sr(1) is bonded to eight equivalent Sr(1) and four equivalent Mg(1) atoms to form SrSr8Mg4 cuboctahedra that share corners with twelve equivalent Sr(1)Sr8Mg4 cuboctahedra, edges with eight equivalent Mg(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)Sr8Mg4 cuboctahedra, faces with four equivalent Mg(1)Sr12 cuboctahedra, and faces with fourteen equivalent Sr(1)Sr8Mg4 cuboctahedra. Mg(1) is bonded to twelve equivalent Sr(1) atoms to form MgSr12 cuboctahedra that share corners with twelve equivalent Mg(1)Sr12 cuboctahedra, edges with twenty-four equivalent Sr(1)Sr8Mg4 cuboctahedra, faces with six equivalent Mg(1)Sr12 cuboctahedra, and faces with twelve equivalent Sr(1)Sr8Mg4 cuboctahedra.
Sr3Mg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Sr(1) is bonded to eight equivalent Sr(1) and four equivalent Mg(1) atoms to form SrSr8Mg4 cuboctahedra that share corners with twelve equivalent Sr(1)Sr8Mg4 cuboctahedra, edges with eight equivalent Mg(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)Sr8Mg4 cuboctahedra, faces with four equivalent Mg(1)Sr12 cuboctahedra, and faces with fourteen equivalent Sr(1)Sr8Mg4 cuboctahedra. All Sr(1)-Sr(1) bond lengths are 4.00 Å. All Sr(1)-Mg(1) bond lengths are 4.00 Å. Mg(1) is bonded to twelve equivalent Sr(1) atoms to form MgSr12 cuboctahedra that share corners with twelve equivalent Mg(1)Sr12 cuboctahedra, edges with twenty-four equivalent Sr(1)Sr8Mg4 cuboctahedra, faces with six equivalent Mg(1)Sr12 cuboctahedra, and faces with twelve equivalent Sr(1)Sr8Mg4 cuboctahedra.