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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 38  1979
Bonding of Vanadium {IV) in Na20, 2 B203-As203 G I asses
A. PAUL
Pages : 68-73
DOI : 10.1080/0371750X.1979.10840891
Abstract
Bonding behaviour of vanadium (IV) in a series of Na20, 2B20a-As20 8 glasses has been studied with optical and electron spin resonance spectroscopy. The esr spectra have been analyzed by assuming that vanadium (IV) is present in these glasses as vanadyl ion in a ligand field of C,v symmetry. It has been found that up to 10 mole% addition of As20 8 to Na20.2B20 3 glass, the covalency in the inplane V -0 a-bonds decreases, and the degree of ... -bonding with the vanadyl oxygen sharply increases; with further addition of As20 3 no more changes in these parameters occur. The very big changes in the ... -bonding has been interpreted as due to participation of arsenic (111)-oxygen polyhedra in bonding with vanadium ion along the z-axis.
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