K-edge absorption spectra of selected vanadium compounds

High-resolution vanadium K-edge absorption spectra have been recorded for a number of selected V compounds of known chemical structure with use of the synchrotron radiation available at the Stanford Synchrotron Radiation Laboratory (SSRL). The compounds studied include the oxides VO, V sub 2 O sub 3...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1984-01, Vol.30 (10), p.5596-5610
Main Authors: WONG, J, LYTLE, F. W, MESMER, R. P, MAYLOTTE, D. H
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other interactions of matter with particles and radiation
Physics
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Summary:High-resolution vanadium K-edge absorption spectra have been recorded for a number of selected V compounds of known chemical structure with use of the synchrotron radiation available at the Stanford Synchrotron Radiation Laboratory (SSRL). The compounds studied include the oxides VO, V sub 2 O sub 3 , V sub 4 O sub 7 , V sub 2 O sub 4 and V sub 2 O sub 5 ; the vanadates NH sub 4 VO sub 3 , CrVO sub 4 and Pb sub 5 (VO sub 4 ) sub 3 Cl; the vanadyl compounds VOSO sub 4 .3H sub 2 O, vanadyl bis(1-phenyl-1,3-butane) dionate, vanadyl phthalocyanine and vanadyl tetraphenylporphyrin; the intermetallics VH, VB sub 2 , VC, VN, VP and VSi sub 2 ; and V sub 2 S sub 3 and a V-bearing mineral, roscoelite. Vanadium in these compounds exhibits a wide range of formal oxidation states (0 to +5) and coordination geometries (octahedral, tetrahedral, square pyramid, etc.) with various ligands. The object of this systematic investigation is to gain further understanding of the details of various absorption features in the vicinity of the K absorption edge of a constituent element in terms of its valence, site symmetry, coordination geometry, ligand type and bond distances. In particular, the intensity and position of a well-defined pre-edge absorption in some of these compounds have been analyzed semiquantitatively within a molecular-orbital framework and a simple coordination-charge concept. 84 ref.--AA
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.30.5596