Materials Data on U2F9 by Materials Project
U2F9 crystallizes in the cubic I-43m space group. The structure is three-dimensional. U+4.50+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of U–F bond distances ranging from 2.16–2.48 Å. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted linear geometry to two equivalent U+4.50+ atoms. In the second F1- site, F1- is bonded in a distorted bent 150 degrees geometry to two equivalent U+4.50+ atoms.
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