Materials Data on Th3Cd by Materials Project
Th3Cd is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Th sites. In the first Th site, Th is bonded to eight Th and four equivalent Cd atoms to form ThTh8Cd4 cuboctahedra that share corners with twelve equivalent ThTh8Cd4 cuboctahedra, edges with eight equivalent CdTh12 cuboctahedra, edges with sixteen ThTh8Cd4 cuboctahedra, faces with four equivalent CdTh12 cuboctahedra, and faces with fourteen ThTh8Cd4 cuboctahedra. There are four shorter (3.46 Å) and four longer (3.52 Å) Th–Th bond lengths. All Th–Cd bond lengths are 3.52 Å. In the second Th site, Th is bonded to eight equivalent Th and four equivalent Cd atoms to form distorted ThTh8Cd4 cuboctahedra that share corners with four equivalent ThTh8Cd4 cuboctahedra, corners with eight equivalent CdTh12 cuboctahedra, edges with twenty-four ThTh8Cd4 cuboctahedra, faces with six equivalent CdTh12 cuboctahedra, and faces with twelve ThTh8Cd4 cuboctahedra. All Th–Cd bond lengths are 3.46 Å. Cd is bonded to twelve Th atoms to form CdTh12 cuboctahedra that share corners with four equivalent CdTh12 cuboctahedra, corners with eight equivalent ThTh8Cd4 cuboctahedra, edges with eight equivalent CdTh12 cuboctahedra, edges with sixteen equivalent ThTh8Cd4 cuboctahedra, faces with four equivalent CdTh12 cuboctahedra, and faces with fourteen ThTh8Cd4 cuboctahedra.