Materials Data on TmGa3Os by Materials Project
TmOsGa3 crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tm is bonded in a 8-coordinate geometry to four equivalent Os and ten Ga atoms. All Tm–Os bond lengths are 3.20 Å. There are eight shorter (2.93 Å) and two longer (3.20 Å) Tm–Ga bond lengths. Os is bonded to four equivalent Tm and eight equivalent Ga atoms to form distorted OsTm4Ga8 cuboctahedra that share corners with four equivalent OsTm4Ga8 cuboctahedra, edges with four equivalent GaTm6 octahedra, and faces with eight equivalent OsTm4Ga8 cuboctahedra. All Os–Ga bond lengths are 2.66 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded to six equivalent Tm atoms to form GaTm6 octahedra that share corners with six equivalent GaTm6 octahedra and edges with twelve equivalent OsTm4Ga8 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. In the second Ga site, Ga is bonded in a 6-coordinate geometry to three equivalent Tm and three equivalent Os atoms.