Spectroscopic and structural characterization of pascoite
Reddy, G. Udayabhaskara, Reddy, R. Ramasubba, Reddy, S. Lakshmi, Frost, Ray L., & Endo, Tamio (2011) Spectroscopic and structural characterization of pascoite. Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, 79(5), pp. 1402-1405.
Pascoite mineral having yellow-orange colour of Colorado, USA origin has been characterized by EPR, optical and NIR spectroscopy. The colour dark red-orange to yellow-orange colour of the pascoite indicates that the mineral contain mixed valency of vanadium. The optical spectrum exhibits a number of electronic bands due to presence of VO(II) ions in the mineral. From EPR studies, the parameters of g, A are evaluated and the data confirm that the ion is in distorted octahedron. Optical absorption studies reveal that two sets of VO(II) is in distorted octahedron. The bands in NIR spectra are due to the overtones and combinations of water molecules.
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|Item Type:||Journal Article|
|Keywords:||pascoite mineral, optical absorption spectrum, EPR spectrum,|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)|
|Divisions:||Past > Schools > Chemistry
Past > QUT Faculties & Divisions > Faculty of Science and Technology
|Copyright Owner:||Copyright 2011 Elsevier|
|Copyright Statement:||This is the author’s version of a work that was accepted for publication in Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, [VOL 79, ISSUE 5, (2011)] DOI: 10.1016/j.saa.2011.04.075|
|Deposited On:||14 Jul 2011 21:36|
|Last Modified:||11 Sep 2013 03:34|
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