Materials Data on Ce3Th by Materials Project

Abstract

ThCe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Th is bonded to twelve Ce atoms to form ThCe12 cuboctahedra that share corners with four equivalent ThCe12 cuboctahedra, corners with eight equivalent CeCe8Th4 cuboctahedra, edges with eight equivalent ThCe12 cuboctahedra, edges with sixteen equivalent CeCe8Th4 cuboctahedra, faces with four equivalent ThCe12 cuboctahedra, and faces with fourteen CeCe8Th4 cuboctahedra. There are eight shorter (3.39 Å) and four longer (3.42 Å) Th–Ce bond lengths. There are two inequivalent Ce sites. In the first Ce site, Ce is bonded to four equivalent Th and eight Ce atoms to form CeCe8Th4 cuboctahedra that share corners with twelve equivalent CeCe8Th4 cuboctahedra, edges with eight equivalent ThCe12 cuboctahedra, edges with sixteen CeCe8Th4 cuboctahedra, faces with four equivalent ThCe12 cuboctahedra, and faces with fourteen CeCe8Th4 cuboctahedra. There are four shorter (3.39 Å) and four longer (3.42 Å) Ce–Ce bond lengths. In the second Ce site, Ce is bonded to four equivalent Th and eight equivalent Ce atoms to form CeCe8Th4 cuboctahedra that share corners with four equivalent CeCe8Th4 cuboctahedra, corners with eight equivalent ThCe12 cuboctahedra, edges with twenty-four CeCe8Th4 cuboctahedra, faces with six equivalent ThCe12 cuboctahedra, and faces with twelve CeCe8Th4 cuboctahedra.