硫酸氧钒（IV）阳离子与硫酸软骨素A的相互作用。

The interaction of the vanadyl (IV) cation with chondroitin sulfate A.

作者信息

Etcheverry S B, Williams P A, Baran E J

机构信息

Química Inorgánica (QUINOR), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina.

出版信息

Biol Trace Elem Res. 1994 Jul;42(1):43-52. doi: 10.1007/BF02990487.

DOI:10.1007/BF02990487

PMID:7986660

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 the D-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.

摘要

通过电子吸收光谱法和红外测量法，在不同pH值以及配体与金属比例高达6:1的水溶液中，研究了VO2+与硫酸软骨素A（CSA）这种多糖之间的相互作用。可以证明生成了VO(CSA)2物种。推测氧阳离子通过D-葡萄糖醛酸部分的羧基和糖苷氧进行配位。一些表征不充分的固体VO/CSA配合物的红外光谱表明具有相同的键合特征。在较高配体与金属比例下获得的初步结果表明存在不同的配位行为。