• Chelation behaviour of biologically activeo-hydroxy naphthaldehyde derivatives with bivalent metal ions in different solvents: A potentiometric study

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/105/02/0103-0110

    • Keywords

       

      Stability constants; o-hydroxy naphthaldehyde derivatives; bivalent metal ions; weighted least squares method

    • Abstract

       

      Equilibria between the derivatives ofo-hydroxy naphthaldehyde and protons or bivalent metal ions have been investigated potentiometrically at constant ionic strength while varying the solvents in definite ratios (solvent: water). The method of Bjerrum and Calvin as modified by Irving and Rossotti (1954) has been used to find the values of$$\tilde n$$ and pL. The formation constants of metal chelates have been calculated using a weighted least squares method. The values of$$S_{\min } = \chi ^2 $$ have also been calculated. The order of stability constants is determined as Mg2+<Mn2+<Cd2+<Pb2+<Zn2+<Co2+<Ni2+<Cu2+<UO22+ Solvent effects on stability constants and comparative studies of both the derivatives ofo-hydroxy naphthaldehyde have been reported.

    • Author Affiliations

       

      Sahadev1 R K Sharma1 S K Sindhwani1

      1. Department of Chemistry, University of Delhi, Delhi - 110 007, India
    • Dates

       
  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.