CeMg is alpha La-derived structured and crystallizes in the hexagonal P-6m2 space group. Mg(1) is bonded to six equivalent Mg(1) and six equivalent Ce(1) atoms to form MgCe6Mg6 cuboctahedra that share corners with eighteen equivalent Mg(1)Ce6Mg6 cuboctahedra, edges with six equivalent Mg(1)Ce6Mg6 cuboctahedra, edges with twelve equivalent Ce(1)Ce6Mg6 cuboctahedra, faces with eight equivalent Mg(1)Ce6Mg6 cuboctahedra, and faces with twelve equivalent Ce(1)Ce6Mg6 cuboctahedra. Ce(1) is bonded to six equivalent Mg(1) and six equivalent Ce(1) atoms to form CeCe6Mg6 cuboctahedra that share corners with eighteen equivalent Ce(1)Ce6Mg6 cuboctahedra, edges with six equivalent Ce(1)Ce6Mg6 cuboctahedra, edges with twelve equivalent Mg(1)Ce6Mg6 cuboctahedra, faces with eight equivalent Ce(1)Ce6Mg6 cuboctahedra, and faces with twelve equivalent Mg(1)Ce6Mg6 cuboctahedra.
CeMg is alpha La-derived structured and crystallizes in the hexagonal P-6m2 space group. Mg(1) is bonded to six equivalent Mg(1) and six equivalent Ce(1) atoms to form MgCe6Mg6 cuboctahedra that share corners with eighteen equivalent Mg(1)Ce6Mg6 cuboctahedra, edges with six equivalent Mg(1)Ce6Mg6 cuboctahedra, edges with twelve equivalent Ce(1)Ce6Mg6 cuboctahedra, faces with eight equivalent Mg(1)Ce6Mg6 cuboctahedra, and faces with twelve equivalent Ce(1)Ce6Mg6 cuboctahedra. All Mg(1)-Mg(1) bond lengths are 3.07 Å. All Mg(1)-Ce(1) bond lengths are 3.50 Å. Ce(1) is bonded to six equivalent Mg(1) and six equivalent Ce(1) atoms to form CeCe6Mg6 cuboctahedra that share corners with eighteen equivalent Ce(1)Ce6Mg6 cuboctahedra, edges with six equivalent Ce(1)Ce6Mg6 cuboctahedra, edges with twelve equivalent Mg(1)Ce6Mg6 cuboctahedra, faces with eight equivalent Ce(1)Ce6Mg6 cuboctahedra, and faces with twelve equivalent Mg(1)Ce6Mg6 cuboctahedra. All Ce(1)-Ce(1) bond lengths are 3.07 Å.