Journal of Chemical Sciences | Indian Academy of Sciences

1. Home
2. Journals
3. Journal of Chemical Sciences
- V Malathi
  
  Articles written in Journal of Chemical Sciences
- Volume 116 Issue 3 May 2004 pp 143-150
  
  Equilibria and kinetics for pH-dependent axial ligation of ethylester and methylester(aquo)cobaloximes with aromatic and aliphatic N-donor ligands and a molecular mechanistic study of the Co-C bond
  
  J V Madhuri V Malathi S Satyanarayana
  
  More Details Abstract Fulltext PDF
  
  Equilibrium constants are determined for the reaction of ethylester and methyl ester (aquo) cobaloximes with histamine, histidine, glycine and ethyl glycine ester as a function of pH at 25°C, using spectrophotometric technique. The functional dependence of pK_a on the substitution rate of H₂O varies with the pK_a of the incoming ligand, establishing the existence of nucleophilic participation of the ligand in the transition state. This data is interpreted with the help of kinetic data where dissociation kinetic reactions were also studied as a function of pH. Binding and kinetic data were correlated based on the basicity, steric hindrance of the entering ligand and HSAB principle. To compare the rate constants of the entering ligands pH-independent second-order rate constants were calculated. The effect of incoming ligand on Co-C bond is studied using molecular mechanics

Journal of Chemical Sciences

Volume 135, 2023
All articles
Continuous Article Publishing mode

Journal of Chemical Sciences | News
- Editorial Note on Continuous Article Publication
  
  Posted on July 25, 2019
  
  Click here for Editorial Note on CAP Mode
  
  TOP CITED ARTICLES 2019-2020

© 2022-2023 Indian Academy of Sciences, Bengaluru.

Contact | Site index