ErCe3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Er(1) is bonded to twelve equivalent Ce(1) atoms to form ErCe12 cuboctahedra that share corners with twelve equivalent Er(1)Ce12 cuboctahedra, edges with twenty-four equivalent Ce(1)Ce8Er4 cuboctahedra, faces with six equivalent Er(1)Ce12 cuboctahedra, and faces with twelve equivalent Ce(1)Ce8Er4 cuboctahedra. Ce(1) is bonded to four equivalent Er(1) and eight equivalent Ce(1) atoms to form CeCe8Er4 cuboctahedra that share corners with twelve equivalent Ce(1)Ce8Er4 cuboctahedra, edges with eight equivalent Er(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)Ce8Er4 cuboctahedra, faces with four equivalent Er(1)Ce12 cuboctahedra, and faces with fourteen equivalent Ce(1)Ce8Er4 cuboctahedra.
ErCe3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Er(1) is bonded to twelve equivalent Ce(1) atoms to form ErCe12 cuboctahedra that share corners with twelve equivalent Er(1)Ce12 cuboctahedra, edges with twenty-four equivalent Ce(1)Ce8Er4 cuboctahedra, faces with six equivalent Er(1)Ce12 cuboctahedra, and faces with twelve equivalent Ce(1)Ce8Er4 cuboctahedra. All Er(1)-Ce(1) bond lengths are 3.42 Å. Ce(1) is bonded to four equivalent Er(1) and eight equivalent Ce(1) atoms to form CeCe8Er4 cuboctahedra that share corners with twelve equivalent Ce(1)Ce8Er4 cuboctahedra, edges with eight equivalent Er(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)Ce8Er4 cuboctahedra, faces with four equivalent Er(1)Ce12 cuboctahedra, and faces with fourteen equivalent Ce(1)Ce8Er4 cuboctahedra. All Ce(1)-Ce(1) bond lengths are 3.42 Å.