Materials Data on Cs2KCeBr6 by Materials Project
Cs2KCeBr6 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 KBr6 octahedra, and faces with four equivalent CeBr6 octahedra. All Cs–Br bond lengths are 4.30 Å. K1+ is bonded to six equivalent Br1- atoms to form KBr6 octahedra that share corners with six equivalent CeBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All K–Br bond lengths are 3.17 Å. Ce3+ is bonded to six equivalent Br1- atoms to form CeBr6 octahedra that share corners with six equivalent KBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ce–Br bond lengths are 2.90 Å. Br1- is bonded in a linear geometry to four equivalent Cs1+, one K1+, and one Ce3+ atom.