• Intramolecular interligand interaction in zinc(II) and cadmium(II) mixed ligand complexes of ATP and aminoacids or dipeptides or phenolic compounds

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    • Keywords


      Stability constants ternary complexes; adenosine 5′-phosphate; amino acids; dipeptides; catechol or analogue

    • Abstract


      The stability constants of (MATPL) complexes in aqueous medium have been determined potentiometrically, at 25°C and at an ionic strength of 0.7;2 M (NaClO4), by using the SCOGS computer program, where M=Zn(II) or Cd(II), ATP=adenosine 5′-triphosphate,l=α-alanine (Ala), phenylalanine (Phe),l-tyrosine (Tyr),l-tryptophan (Trp), glycyl glycine (gg), glycyll-alanine (ga), catechol (cat), orthoaminophenol (oap) and 2,3-dihydroxy naphthalene (dhn). The stability of these ternary complexes is discussed in terms of Δlogk values. Probable reasons for the stabilization or destabilization of the ternary complexes are suggested, with reference to the tetrahedral geometry of the complexes, a point of relevance in the environment around Zn(II) in the metalloenzyme.

    • Author Affiliations


      Alexander Verghese Vaidyan1 Pabitra K Bhattacharya1

      1. Department of Chemistry, Maharaja Sayajirao University of Baroda, Baroda - 390 002, India
    • Dates

  • Journal of Chemical Sciences | News

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