Mg4CeY is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. Mg(1) is bonded to six equivalent Mg(1), three equivalent Ce(1), and three equivalent Y(1) atoms to form a mixture of face, corner, and edge-sharing MgCe3Y3Mg6 cuboctahedra. Ce(1) is bonded in a 16-coordinate geometry to twelve equivalent Mg(1) and four equivalent Y(1) atoms. Y(1) is bonded in a 16-coordinate geometry to twelve equivalent Mg(1) and four equivalent Ce(1) atoms.
Mg4CeY is Hexagonal Laves-derived structured and crystallizes in the cubic F-43m space group. Mg(1) is bonded to six equivalent Mg(1), three equivalent Ce(1), and three equivalent Y(1) atoms to form a mixture of face, corner, and edge-sharing MgCe3Y3Mg6 cuboctahedra. There are three shorter (3.01 Å) and three longer (3.02 Å) Mg(1)-Mg(1) bond lengths. All Mg(1)-Ce(1) bond lengths are 3.54 Å. All Mg(1)-Y(1) bond lengths are 3.54 Å. Ce(1) is bonded in a 16-coordinate geometry to twelve equivalent Mg(1) and four equivalent Y(1) atoms. All Ce(1)-Y(1) bond lengths are 3.69 Å. Y(1) is bonded in a 16-coordinate geometry to twelve equivalent Mg(1) and four equivalent Ce(1) atoms.