Materials Data on Cs2UCl6 by Materials Project
Cs2UCl6 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Cs1+ is bonded to twelve equivalent Cl1- atoms to form CsCl12 cuboctahedra that share corners with six equivalent CsCl12 cuboctahedra, corners with three equivalent UCl6 octahedra, faces with eight equivalent CsCl12 cuboctahedra, and faces with three equivalent UCl6 octahedra. The corner-sharing octahedral tilt angles are 21°. There are a spread of Cs–Cl bond distances ranging from 3.83–3.89 Å. U4+ is bonded to six equivalent Cl1- atoms to form UCl6 octahedra that share corners with six equivalent CsCl12 cuboctahedra and faces with six equivalent CsCl12 cuboctahedra. All U–Cl bond lengths are 2.63 Å. Cl1- is bonded in a distorted single-bond geometry to four equivalent Cs1+ and one U4+ atom.