The electronic spectra of alkali metal uranates and band assignments: An analysis of their diffuse reflectance spectra / Volkovich V.A., Griffiths T.R., Fray D.J., Thied R.C. // Physical Chemistry Chemical Physics. - 2001. - V. 3, l. 23. - P. 5182-5191.

ISSN:

14639076

Type:

Article

Abstract:

The diffuse reflectance spectra of alkali metal (Li, Na, K, Rb and Cs) mono- and diuranates, as well as several additional lithium polyuranates(VI), have been measured at 25 and - 196°C, and up to 500°C for the potassium uranates. The spectra of the mono- and diuranates of caesium and sodium were similar as were the spectra of the uranates of rubidium and potassium, because of identical site symmetries. Spectra recorded at - 196°C exhibited enough features to enable their resolution into individual overlapping bands. Existing theoretical models of the uranate spectra have been critically examined. The recorded spectra were analysed using the MO diagram for the octahedral UO6 6- moiety. The spectra were interpreted in terms of the various expected uranate ion site symmetries and the results obtained for all the alkali metal mono- and diuranates are reported here.

Author keywords:

Index keywords:

alkali metal; cesium; lithium derivative; potassium derivative; rubidium; sodium derivative; uranium derivative; article; diffuse reflectance spectroscopy; electronics; model; recording; spectrum; tem

DOI:

10.1039/b105025g

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Affiliations	Centre for Radiochemistry Research, Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom; School of Chemistry, Leeds University, Leeds, LS2 9JT, United Kingdom; Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, United Kingdom; British Nuclear Fuels plc., Sellafield R&D, Sellafield, Seascale, CA20 1PG, United Kingdom; Department of Rare Metals, Physico-Engineering Faculty, Ural State Technical University—UPI, 19 Mira ul., Ekaterinburg, 620002, Russian Federation
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Language of Original Document	English
Abbreviated Source Title	Phys. Chem. Chem. Phys.
Source	Scopus