Ce3La is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Ce(1), four equivalent Ce(2), and four equivalent La(1) atoms to form CeLa4Ce8 cuboctahedra that share corners with twelve equivalent Ce(1)La4Ce8 cuboctahedra, edges with eight equivalent Ce(1)La4Ce8 cuboctahedra, edges with eight equivalent Ce(2)La4Ce8 cuboctahedra, edges with eight equivalent La(1)Ce12 cuboctahedra, faces with four equivalent Ce(2)La4Ce8 cuboctahedra, faces with four equivalent La(1)Ce12 cuboctahedra, and faces with ten equivalent Ce(1)La4Ce8 cuboctahedra. In the second Ce site, Ce(2) is bonded to eight equivalent Ce(1) and four equivalent La(1) atoms to form CeLa4Ce8 cuboctahedra that share corners with four equivalent Ce(2)La4Ce8 cuboctahedra, corners with eight equivalent La(1)Ce12 cuboctahedra, edges with eight equivalent Ce(2)La4Ce8 cuboctahedra, edges with sixteen equivalent Ce(1)La4Ce8 cuboctahedra, faces with four equivalent Ce(2)La4Ce8 cuboctahedra, faces with six equivalent La(1)Ce12 cuboctahedra, and faces with eight equivalent Ce(1)La4Ce8 cuboctahedra. La(1) is bonded to four equivalent Ce(2) and eight equivalent Ce(1) atoms to form LaCe12 cuboctahedra that share corners with four equivalent La(1)Ce12 cuboctahedra, corners with eight equivalent Ce(2)La4Ce8 cuboctahedra, edges with eight equivalent La(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)La4Ce8 cuboctahedra, faces with four equivalent La(1)Ce12 cuboctahedra, faces with six equivalent Ce(2)La4Ce8 cuboctahedra, and faces with eight equivalent Ce(1)La4Ce8 cuboctahedra.
Ce3La is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Ce(1), four equivalent Ce(2), and four equivalent La(1) atoms to form CeLa4Ce8 cuboctahedra that share corners with twelve equivalent Ce(1)La4Ce8 cuboctahedra, edges with eight equivalent Ce(1)La4Ce8 cuboctahedra, edges with eight equivalent Ce(2)La4Ce8 cuboctahedra, edges with eight equivalent La(1)Ce12 cuboctahedra, faces with four equivalent Ce(2)La4Ce8 cuboctahedra, faces with four equivalent La(1)Ce12 cuboctahedra, and faces with ten equivalent Ce(1)La4Ce8 cuboctahedra. All Ce(1)-Ce(1) bond lengths are 3.39 Å. All Ce(1)-Ce(2) bond lengths are 3.41 Å. All Ce(1)-La(1) bond lengths are 3.41 Å. In the second Ce site, Ce(2) is bonded to eight equivalent Ce(1) and four equivalent La(1) atoms to form CeLa4Ce8 cuboctahedra that share corners with four equivalent Ce(2)La4Ce8 cuboctahedra, corners with eight equivalent La(1)Ce12 cuboctahedra, edges with eight equivalent Ce(2)La4Ce8 cuboctahedra, edges with sixteen equivalent Ce(1)La4Ce8 cuboctahedra, faces with four equivalent Ce(2)La4Ce8 cuboctahedra, faces with six equivalent La(1)Ce12 cuboctahedra, and faces with eight equivalent Ce(1)La4Ce8 cuboctahedra. All Ce(2)-La(1) bond lengths are 3.39 Å. La(1) is bonded to four equivalent Ce(2) and eight equivalent Ce(1) atoms to form LaCe12 cuboctahedra that share corners with four equivalent La(1)Ce12 cuboctahedra, corners with eight equivalent Ce(2)La4Ce8 cuboctahedra, edges with eight equivalent La(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)La4Ce8 cuboctahedra, faces with four equivalent La(1)Ce12 cuboctahedra, faces with six equivalent Ce(2)La4Ce8 cuboctahedra, and faces with eight equivalent Ce(1)La4Ce8 cuboctahedra.