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

• # Fulltext

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+&lt;Mn2+&lt;Cd2+&lt;Pb2+&lt;Zn2+&lt;Co2+&lt;Ni2+&lt;Cu2+&lt;UO22+ Solvent effects on stability constants and comparative studies of both the derivatives ofo-hydroxy naphthaldehyde have been reported.

• # Author Affiliations

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

• # Journal of Chemical Sciences

Volume 134, 2022
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019