Aqueous vanadium ion dynamics relevant to bioinorganic chemistry: A review

• Substitution dynamics and mechanisms of vanadium complexes
• Kinetics of formation of vanadium(IV) and -(V) dimers and trimers
• Oxidation–reduction kinetics of vanadium complexes
• Relevance to endogenous and therapeutic vanadium

Aqueous solutions of the four highest vanadium oxidation states exhibit four diverse colors, which only hint at the diverse reactions that these ions can undergo. Cationic vanadium ions form complexes with ligands; anionic vanadium ions form complexes with ligands and self-react to form isopolyanions. All vanadium species undergo oxidation –reduction reactions. With a few exceptions, elucidation of the dynamics of these reactions awaited the development of fast reaction techniques before the kinetics of elementary ligation, condensation, reduction, and oxidation of the aqueous vanadium ions could be investigated. As the biological roles played by endogenous and therapeutic vanadium expand, it is appropriate to bring the results of the diverse kinetics studies under one umbrella. To achieve this goal this review presents a systematic examination of elementary aqueous vanadium ion dynamics.

A review focused on rate constants of elementary step reactions for aqueous vanadium cations and anions and their relevance to bioinorganic chemistry.Figure optionsDownload as PowerPoint slide