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Raman and infrared spectroscopic study of the molybdate containing uranyl mineral calcurmolite

Frost, Ray L., Cejka, Jiri, & Dickfos, Marilla J. (2008) Raman and infrared spectroscopic study of the molybdate containing uranyl mineral calcurmolite. Journal of Raman Spectroscopy, 39(7), pp. 779-785.

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Abstract

Raman and infrared spectra of calcurmolite were recorded and interpreted from the uranium and molybdenum polyhedra, water molecules and hydroxyls point of view. U-O bond lengths in uranyl and Mo-O bond lengths in MoO6 octahedra were calculated and O-H…O bond lengths were inferred from the spectra. The mineral calcurmolite is characterised by bands assigned to the vibrations of the UO2 units. These units provide intense Raman bands at 930, 900 and 868 and 823 cm-1. These bands are attributed to the antisymmetric and symmetric stretching modes of the UO2 units respectively. Raman bands at 794, 700, 644, 378 and 354 cm-1 are attributed to vibrations of the MoO4 units. The bands at 693 and 668 cm-1 are attributed to antisymmetric and symmetric Ag modes of terminal MO2 units. Similar bands are observed at 797 and 773 cm-1 for koechlinite and 798 and 775 cm-1 for lindgrenite. It is probable that some of the bands in the low wavenumber region are attributable to the bending modes of MO2 units.

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ID Code: 13828
Item Type: Journal Article
Keywords: calcurmolite, mineral, uranyl molybdate, infrared and Raman spectroscopy, U, O (uranyl) bond lengths, Mo, O bond lengths, O, H…O bond lengths
DOI: 10.1002/jrs.1897
ISSN: 0377-0486
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Physical & Chemical Sciences
Copyright Owner: Copyright 2008 John Wiley & Sons
Copyright Statement: The definite version is available on publication at www3.interscience.wiley.com
Deposited On: 20 Jun 2008
Last Modified: 29 Feb 2012 23:49

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