Electrochemical and spectral behavior of mononuclear oxo-vanadium(IV)salicyldiimine complexes

Abstract

Electrochemical and spectroscopic data of unsymmetrical and symmetrical mononuclear oxo-vanadium(IV)salicyldiimine complexes [VO(x,y-Sal)(x′,y′-Sal)Phen)] and [VO(x, y-Sal)(x′, y′-Sal)iPr)], where x, x′  = 5-H, 5-Br, 5-NO₂ and y, y′  = 4-H, 4-MeO, were prepared and studied. Our results show tetradentate SalPhen or SaliPr coordinated in the equatorial plane. The electrochemical behavior is related to UV–Vis and IR spectra. Electron-withdrawing groups affected vanadium through π-acceptor properties of imine and electron-donation groups through π- and σ-donation via phenolic oxygen.

Keywords:

• Oxo-vanadium(IV)
• Salicyldiimine complexes
• Unsymmetrical tetradentate salicyldiimine
• SalPhen
• SaliPr

Acknowledgements

We thank the Department of Science and the University of Kurdistan for financial support of our research.