Chemical-shift of the X-ray K-absorption edge of Co in some compounds, complexes and minerals

Chetal, AR and Mahto, P and Sarode, PR (1988) Chemical-shift of the X-ray K-absorption edge of Co in some compounds, complexes and minerals. In: Journal of Physics and Chemistry of Solids, 49 (3). pp. 279-283.

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Abstract

The chemical-shift of the X-ray K-absorption edge of Co was studied in a large number of compounds, complexes (spinels) and minerals of Co in its different oxidation states having widely different crystal structures and containing different types of bonding and various types of ligands, and were reported collectively, for the first time, in a single paper. A quadratic relationship was established on the basis of least-squares regression analysis to hold between the chemical-shift and the effective charge on the absorbing atom, but the dominance of the linear term was shown. This relation was utilized in evaluating the charge on the Co-ion in a number of minerals. The effect on chemical-shift of oxidation states of the absorbing atom, of the bond length, crystal structure and higher shell atoms of the molecule, and of electronegativity, atomic number and ionic radius of the ligand was discussed.

Item Type:	Journal Article
Publication:	Journal of Physics and Chemistry of Solids
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Keywords:	Chemical-shift;effective charge;Co systems;regression analysis;repulsive potential.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	06 Sep 2010 10:45
Last Modified:	19 Sep 2010 06:16
URI:	http://eprints.iisc.ac.in/id/eprint/32066

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