Vibrational spectra of alkali metal (Li, Na and K) uranates and consequent assignment of uranate ion site symmetry / Volkovich V.A., Griffiths T.R., Fray D.J., Fields M. // Vibrational Spectroscopy. - 1998. - V. 17, l. 1-3. - P. 83-91.

ISSN:

09242031

Type:

Article

Abstract:

Vibrational (Raman and infrared) spectra of nine alkali metal (lithium, sodium and potassium) uranates have been measured in the infrared range of 4000-250 cm-1 and the Raman shift range of 1100-50 cm-1. The Raman spectra of sodium and potassium uranates, and lithium polyuranates are reported for the first time. From these spectra the site symmetries of intrinsic uranate groups are deduced by comparing the number of observed and resolved bands with the number predicted by the various site symmetries subgroups possible for each uranate crystal symmetry. The following could then be assigned: C2h for Li2UO4; D2h for α-Na2UO4; D4h for K2UO4; D2 for Na2U2O7 and C2h for K2U2O7. For the lithium polyuranates, Li2O · 1.6UO3, Li2O · 1.75UO3, Li2U2O7 and Li2U3O10, as their crystal symmetries are not fully known, no definite conclusions concerning uranate site symmetry could be drawn, except that primitive monoclinic symmetry point groups must be excluded. © 1998 Elsevier Science B.V. All rights reserved.

Author keywords:

Alkali metal uranates(VI); Infrared spectroscopy; Raman spectroscopy

Index keywords:

нет данных

DOI:

нет данных

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-0001925512&partnerID=40&md5=1dbfc9aae1292dcd29427bfd8e419a4f
Affiliations	School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom; Dept. of Mat. Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom; British Nuclear Fuels Plc. (BNFL), R and T North, Seascale, Cumbria, CA20 IPG, United Kingdom; Department of Rare Metals, Physical-Engineering Faculty, Ural State Technical University-UPI, 19 Mira Ul., Ekaterinburg, 620002, Russian Federation; Protea Ltd. Magpie Manor, Wistaston Green Road, Crewe, CW2 8SA, United Kingdom
Author Keywords	Alkali metal uranates(VI); Infrared spectroscopy; Raman spectroscopy
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Correspondence Address	Griffiths, T.R.; School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom; email: t.r.griffiths@chem.leeds.ac.uk
CODEN	VISPE
Language of Original Document	English
Abbreviated Source Title	Vib. Spectrosc.
Source	Scopus