Materials Data on Rb2UF6 by Materials Project

Rb2UF6 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Rb1+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of Rb–F bond distances ranging from 2.93–3.17 Å. U4+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are a spread of U–F bond distances ranging from 2.21–2.46 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a 2-coordinate geometry to one Rb1+ and two equivalent U4+ atoms. In the second F1- site, F1- is bonded in a 5-coordinate geometry to four equivalent Rb1+ and one U4+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to four equivalent Rb1+ and one U4+ atom.