Siderophore chemistry of vanadium. Kinetics and equilibrium of interaction between vanadium(IV) and desferrioxamine B in aqueous acidic solutions

Journal Article (Journal Article)

The kinetics and equilibrium of interaction between vanadyl sulfate and a natural trihydroxamate-based siderophore, desferrioxamine B methanesulfonate, were studied spectrophotometrically in acidic aqueous perchlorate solutions of 2.0 M ionic strength. The bi-, tetra-, and hexadentate-bonded complexes were formed under these conditions, and their stability constants were calculated. The rate constants for the formation and hydrolysis of the bi- and tetradentate complexes were estimated. The formation of the bidentate complex proceeds via two parallel pathways involving the hydrolyzed and unhydrolyzed vanadyl-aquo species. The hydrolyzed form was found to react with the siderophore ca. 105 times faster than the unhydrolyzed form. © 1991 American Chemical Society.

Full Text

Duke Authors

Cited Authors

  • Batinić-Haberle, I; Biruš, M; Pribanić, M

Published Date

  • January 1, 1991

Published In

Volume / Issue

  • 30 / 26

Start / End Page

  • 4882 - 4887

International Standard Serial Number (ISSN)

  • 0020-1669

Digital Object Identifier (DOI)

  • 10.1021/ic00026a007

Citation Source

  • Scopus