Expanding pentafluorouranates: hydrothermal synthesis and characterization of β-NaUF 5 and β-NaUF 5 ·H 2 O

Two new sodium uranium(iv) pentafluorides were synthesized from uranium dioxide, HF, and NaF using mild hydrothermal conditions. β-NaUF ·H O has greater lattice energy than previously-known α-NaUF ·H O and possesses lower symmetry with the latter compound being orthorhombic, whereas β-NaUF ·H O is m...

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Bibliographic Details
Published in:RSC advances 2018-01, Vol.8 (50), p.28642-28648
Main Authors: Chemey, Alexander T, Sperling, Joseph M, Albrecht-Schmitt, Thomas E
Format: Article
Language:English
Subjects:
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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Summary:Two new sodium uranium(iv) pentafluorides were synthesized from uranium dioxide, HF, and NaF using mild hydrothermal conditions. β-NaUF ·H O has greater lattice energy than previously-known α-NaUF ·H O and possesses lower symmetry with the latter compound being orthorhombic, whereas β-NaUF ·H O is monoclinic. Trigonal β-NaUF also possesses different connectivity between the [UF ] building units than the α-phase, with higher symmetry and greater lattice energy than orthorhombic α-NaUF . The single crystal absorption spectra of these compounds are also reported and compared.
ISSN:2046-2069
2046-2069
DOI:10.1039/C8RA05780J