Mg3Sn is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/m space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Sn(1) atoms to form distorted MgMg8Sn4 cuboctahedra that share corners with four equivalent Sn(1)Mg12 cuboctahedra, corners with fourteen equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with six equivalent Sn(1)Mg12 cuboctahedra, edges with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with four equivalent Sn(1)Mg12 cuboctahedra, and faces with sixteen equivalent Mg(1)Mg8Sn4 cuboctahedra. Sn(1) is bonded to twelve equivalent Mg(1) atoms to form SnMg12 cuboctahedra that share corners with six equivalent Sn(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with eighteen equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with eight equivalent Sn(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra.
Mg3Sn is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/m space group. Mg(1) is bonded to eight equivalent Mg(1) and four equivalent Sn(1) atoms to form distorted MgMg8Sn4 cuboctahedra that share corners with four equivalent Sn(1)Mg12 cuboctahedra, corners with fourteen equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with six equivalent Sn(1)Mg12 cuboctahedra, edges with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with four equivalent Sn(1)Mg12 cuboctahedra, and faces with sixteen equivalent Mg(1)Mg8Sn4 cuboctahedra. There are six shorter (3.13 Å) and two longer (3.19 Å) Mg(1)-Mg(1) bond lengths. There are a spread of Mg(1)-Sn(1) bond distances ranging from 3.13-3.19 Å. Sn(1) is bonded to twelve equivalent Mg(1) atoms to form SnMg12 cuboctahedra that share corners with six equivalent Sn(1)Mg12 cuboctahedra, corners with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra, edges with eighteen equivalent Mg(1)Mg8Sn4 cuboctahedra, faces with eight equivalent Sn(1)Mg12 cuboctahedra, and faces with twelve equivalent Mg(1)Mg8Sn4 cuboctahedra.