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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Guanajuato
2014
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| Online Access: | https://www.redalyc.org/articulo.oa?id=41630722002 |
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Table of Contents:
- Electrochemical studies of certain novel N|-(benzenesulfonyl)-3-methyl-4-(2|-substituted-aryl hydrazono)- pyrazolin-5-ones Peddy Srinivasan A. Raghavendra Guru Prasad Golla Narayana Swamy L. K. Rao Ravindranath Multidisciplinarias (Ciencias Sociales) Aryl ones hydrazono pyrazolin polarography Polarographic and cyclic voltammetric reduction of N|-(benzenesulfonyl)-3-methyl-4-(2|-substituted-aryl hydrazono)-pyrazolin-5-ones was carried out in 40% (v/v) dimethylformamide in Britton-Robinson buffer solutions of pH 1.1-10.1. Thermodynamic parameters i.e. enthalpy of activation ‘∆H*p’, heat of activation at constant volume ‘∆H*v’ and entropy of activation ‘∆S*’ were evaluated. The reduction was found to be diffusion controlled and irreversible at all temperatures. The compound exhibits two polarographic waves in the entire pH range of study. The results obtained in polarography were compared with the results obtained in cyclic voltammetry and a mechanism for the electrode process was proposed in acidic and basic media. 2014 artículo científico 0188-6266 https://www.redalyc.org/articulo.oa?id=41630722002 en http://www.redalyc.org/revista.oa?id=416 Acta Universitaria application/pdf Universidad de Guanajuato Acta Universitaria (México) Num.2 Vol.24