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  • Chem Sci Trans., 2015, 4(2),  pp 315-324  

    DOI:10.7598/cst2015.943

    Research Article

    Synthesis, Characterization and Biological Studies of Porphyrinyloxovanadium(IV)benzimidazole Complexes

  • GAURI D. BAJJU*, VED KUMAR, ASHU and GITA DEVI
  • Department of Chemistry, University of Jammu-180 006, Jammu & Kashmir, India
  • Abstract

    The six-coordinate oxovanadium(IV) complexes [VO(RTPP)(L)] (where R=H, methyl, methoxy and chloro groups and L= methyl and ethyl substituted benzimidazoles) were prepared by reacting the ligands; 2-methylbenzimidazole and 2-ethylbenzimidazole with various VO(RTPP). The complexes were characterized by elemental analysis, IR, UVVis and 1H & 13C NMR. All complexes show V=O stretching vibrations between 932 and 1050 cm-1. The presence of three dd transitions occurring between 400 and 625 nm confirm the d1 electronic configuration of the complexes. Based on spectral and magnetic studies, an octahedral geometry is assigned for all the complexes. The electrochemical behavior of some complexes was also investigated using cyclic voltammetry. The complexes exhibit positive antibacterial activities but showed negative antifungal activity. The free-radical-scavenging ability of the metal complexes was also determined by their interaction with the stable free radical 2,2-diphenyl-1-picrylhydrazyl, which showed encouraging antioxidant activities.

    Keywords

    Oxovanadium, Benzimidazole, Antioxidant activities

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