Materials Data on Cs2TlBiBr6 by Materials Project
Cs2TlBiBr6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Cs1+ is bonded to twelve equivalent Br1- atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent CsBr12 cuboctahedra, faces with six equivalent CsBr12 cuboctahedra, faces with four equivalent TlBr6 octahedra, and faces with four equivalent BiBr6 octahedra. All Cs–Br bond lengths are 4.28 Å. Tl1+ is bonded to six equivalent Br1- atoms to form TlBr6 octahedra that share corners with six equivalent BiBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Tl–Br bond lengths are 3.17 Å. Bi3+ is bonded to six equivalent Br1- atoms to form BiBr6 octahedra that share corners with six equivalent TlBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Bi–Br bond lengths are 2.88 Å. Br1- is bonded in a distorted linear geometry to four equivalent Cs1+, one Tl1+, and one Bi3+ atom.