Materials Data on TmAl3 by Materials Project

Abstract

TmAl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tm is bonded to twelve equivalent Al atoms to form TmAl12 cuboctahedra that share corners with twelve equivalent TmAl12 cuboctahedra, edges with twenty-four equivalent AlTm4Al8 cuboctahedra, faces with six equivalent TmAl12 cuboctahedra, and faces with twelve equivalent AlTm4Al8 cuboctahedra. All Tm–Al bond lengths are 2.99 Å. Al is bonded to four equivalent Tm and eight equivalent Al atoms to form distorted AlTm4Al8 cuboctahedra that share corners with twelve equivalent AlTm4Al8 cuboctahedra, edges with eight equivalent TmAl12 cuboctahedra, edges with sixteen equivalent AlTm4Al8 cuboctahedra, faces with four equivalent TmAl12 cuboctahedra, and faces with fourteen equivalent AlTm4Al8 cuboctahedra. All Al–Al bond lengths are 2.99 Å.