Abstract
The interaction of VO2+ with the muchopolysaccharide chondroitin sulfate A (CSA) has been investigated by electron absorption spectroscopy and infrared measurements in aqueous solutions at different pH-values and ligand to metal ratios up to 6:1. The generation of a VO(CSA)2 species could be demonstrated. Coordination of the oxocation through the carboxylate group and the glycosidic oxygen of thed-glucuronate moieties is suggested. Infrared spectra of some poorly characterized solid VO/CSA complexes point to the same bonding characteristics. Preliminary results obtained at higher ligand to metal ratios suggest a different coordination behavior.
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Etcheverry, S.B., Williams, P.A.M. & Baran, E.J. The interaction of the vanadyl (IV) cation with chondroitin sulfate A. Biol Trace Elem Res 42, 43–52 (1994). https://doi.org/10.1007/BF02990487
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DOI: https://doi.org/10.1007/BF02990487