Journal
COORDINATION CHEMISTRY REVIEWS
Volume 318, Issue -, Pages 135-157Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2016.03.011
Keywords
Peroxido/peroxo complexes of vanadium; Peroxidovanadates; Molecular structure; Vibrational spectra; V-51 NMR spectra; Thermal decomposition
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Funding
- Grant Agency of the Ministry of Education of the Slovak Republic
- Slovak Academy of Sciences VEGA Project [1/0336/13]
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Peroxido complexes represent an important group of vanadium compounds having practical applications in distinct areas of chemistry. They possess insulin mimetic properties, antitumor activity and stimulate or inhibit certain enzymes. The bioinorganic chemistry of peroxidovanadates studies also the role of vanadium in the active centers of vanadium dependent enzymes (haloperoxidases and nitrogenases). Peroxidovanadium compounds are intensively studied for their oxidative properties. They can act as catalysts or stoichiometric oxidants in oxidation reactions of organic compounds, e.g. in epoxidation, sulfoxidation, hydroxylation or bromination. This versatility of vanadium peroxido complexes necessitates a critical review of their molecular structure and properties both in solution and in solid state. In this inclusive review we present the complete set of peroxido complexes of vanadium heretofore characterized by X-ray diffraction analysis. Along with the molecular structures we present and discuss the solid state vibrational spectra and thermal decomposition data. Vibrational, UV-vis and V-51 NMR spectra of complexes dissolved in various solvents are also discussed. We have extracted the data from several speciation studies in order to clarify the formation conditions for different types of peroxidovanadates and summarize their V-51 NMR chemical shifts. We also refer to certain applications of peroxido complexes of vanadium and we place the emphasis on potential applications which have not yet been thoroughly examined but deserve more attention. (C) 2016 Elsevier B.V. All rights reserved.
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