DOE OSTI2020
Tl3Sb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tl1+ is bonded to eight equivalent Tl1+ and four equivalent Sb3- atoms to form distorted TlTl8Sb4 cuboctahedra that share corners with twelve equivalent TlTl8Sb4 cuboctahedra, edges with eight equivalent SbTl12 cuboctahedra, edges with sixteen equivalent TlTl8Sb4 cuboctahedra, faces with four equivalent SbTl12 cuboctahedra, and faces with fourteen equivalent TlTl8Sb4 cuboctahedra. All Tl–Tl bond lengths are 3.53 Å. All Tl–Sb bond lengths are 3.53 Å. Sb3- is bonded to twelve equivalent Tl1+ atoms to form SbTl12 cuboctahedra that share corners with twelve equivalent SbTl12 cuboctahedra, edges with twenty-four equivalent TlTl8Sb4 cuboctahedra, faces with six equivalent SbTl12 cuboctahedra, and faces with twelve equivalent TlTl8Sb4 cuboctahedra.