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Vanadium pp 3-31 | Cite as

Inorganic Chemistry of Vanadium

  • Kan Kanamori
  • Kiyoshi Tsuge
Chapter

Abstract

Stereochemistry and redox property are essential factors in considering the roles of vanadium in biological systems. Coordination geometries adopted by vanadium ions with oxidation numbers +3, +4, and +5 are summarized in this chapter to provide a clue for determining the structure-function relationship of biological vanadium species. Vanadium can have a variety of geometries and its geometry is sometimes flexible. This property may be important for metals in biological systems. The electrochemical properties of complexes in each oxidation state are described by referring to typical mononuclear complexes. The redox potentials of the complexes depend largely on the ligand combination. A comparison of complexes with and without oxo ligands reveals that strong electron donation from oxo ligands stabilizes vanadium ions in higher oxidation states. Additionally, the proton-coupled equilibrium between oxo and aqua ligands imposes a significant effect on the redox behavior of vanadium complexes. Chemical redox reactions related to vanadium catalysts are also described.

Keywords

Coordination stereochemistry Coordination number Redox chemistry Redox potential 

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© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Chemistry, Graduate School of Science and TechnologyUniversity of ToyamaToyamaJapan

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