Materials Data on CeMg by Materials Project

Abstract

CeMg crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Mg is bonded to nine equivalent Mg and three equivalent Ce atoms to form MgCe3Mg9 cuboctahedra that share corners with six equivalent MgCe3Mg9 cuboctahedra, corners with twelve equivalent CeCe9Mg3 cuboctahedra, edges with six equivalent CeCe9Mg3 cuboctahedra, edges with twelve equivalent MgCe3Mg9 cuboctahedra, faces with eight equivalent CeCe9Mg3 cuboctahedra, and faces with twelve equivalent MgCe3Mg9 cuboctahedra. There are six shorter (3.15 Å) and three longer (3.22 Å) Mg–Mg bond lengths. All Mg–Ce bond lengths are 3.44 Å. Ce is bonded to three equivalent Mg and nine equivalent Ce atoms to form CeCe9Mg3 cuboctahedra that share corners with six equivalent CeCe9Mg3 cuboctahedra, corners with twelve equivalent MgCe3Mg9 cuboctahedra, edges with six equivalent MgCe3Mg9 cuboctahedra, edges with twelve equivalent CeCe9Mg3 cuboctahedra, faces with eight equivalent MgCe3Mg9 cuboctahedra, and faces with twelve equivalent CeCe9Mg3 cuboctahedra. There are six shorter (3.15 Å) and three longer (3.61 Å) Ce–Ce bond lengths.