• Chemistry of oxovanadium(IV) bound to tetradentate ONNO donors: Influence of axial coordination on the V-O(1)bond

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      https://www.ias.ac.in/article/fulltext/jcsc/104/03/0369-0376

    • Keywords

       

      Oxovanadium (IV) chemistry; tetradentate donors; axial coordination; V-O(1)bond

    • Abstract

       

      Chelating behaviour of some tetradenate ONNO donors derived fromq- aminobenzoylhydrazide and some diketones toward oxo-vanadium(IV) ion is reported. The donors react with oxometal cation depending on the pH of the reaction medium. The product containing the neutral keto and the binegative enol form of the donors have the formulae [VO(H2L)(SO4)] (at pH 3.0)(┘1) and [VO(L)(H2O)] (at pH 6.0)(┘2) respectively [H2L = (2-NH2)C6H4CONH: C(R) (CH2)mC(R): NNH CO C6H4(2−NH2); H2L = H2DA(R= CH3,m = 0), H2BA(R = C6H5,m = 0), H2AA(R = CH3,m = 2)]. Both (┘1) and (┘2) react with a neutral monodentate donor B(B = pyridine, aniline etc.) yielding mixed-ligand complexes [VO(L)(B)]. Influence of the axial coordination on the V-O(1) bond is discussed and a monomeric distorted octahedral donor environment for the oxovanadium(IV) ion has been suggested

    • Author Affiliations

       

      Amalendu Maiti1 2 Saktiprosad Ghosh1

      1. Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Calcutta - 700032, India
      2. Department of Chemistry, Ramnagar College, Depal 721 448, District Midnapur, India
    • Dates

       
  • Journal of Chemical Sciences | News

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