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    • Studies on Schiff base complexes: Formation constants of Cu(II), Ni(II) and Zn(II) complexes on N-salicylidene-L-valinate, L-phenylalaninate and L-tryptophanate systems

      K Rengaraj B Sivasankar M Anbu M Palanichamy

      Volume 103 Issue 6 December 1991 pp 707-713

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/103/06/0707-0713

    • Keywords

       

      Schiff base complexes; stability constants; salicyladehyde; L-valine; L-phenylalanine; L-tryptophan

    • Abstract

       

      The computer-based analysis of pH titration data obtained for the determination of the stability constants of M-A-B [M=Ni(II), Cu(II) or Zn(II), A=salicylaldehyde(Sal) and B=L-valine (Val), L-phenylalanine (Phe) and L-tryptophan (Trp) and AB the corresponding Schiff base] indicates preference for the formation of Schiff base complexes rather than the ligands binding as such to the metal ions without fusion of rings. The presence of aliphatic or aromatic side chains in the amino acids has no effect on the basicities of the coordinating sites of the Schiff bases. This is shown by the similarity of stability constant values for different Schiff base complex species.

    • Author Affiliations

       

      K Rengaraj1 B Sivasankar2 M Anbu2 M Palanichamy2

      1. Department of Chemical Engineering, Anna University, Madras - 600025, India
      2. Department of Chemistry, Anna University, Madras - 600025, India

    • Dates

       
      Published
      December 1991
      Manuscript received
      9 October 1990
      Manuscript revised
      8 April 1991

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