The Polarographic Behaviour of Some Arylidene Benzoic Hydrazide Derivatives and Substituent Effect

Autor:	G. B. Mohamed, A. M. Hindawey, H. Y. F. El-Baradie
Rok vydání:	1984
Předmět:	Polarography chemistry.chemical_compound Proton Chemistry Diffusion Electrode Substituent Organic chemistry Physical chemistry General Chemistry Electron Kinetic energy Rate-determining step
Zdroj:	Journal of the Chinese Chemical Society. 31:149-157
ISSN:	0009-4536
DOI:	10.1002/jccs.198400020
Popis:	The polarographic reduction of some arylidene derivatives of benzoic hydrazide are investigated at the DME. The polarograms in solutions of pH≤8 consist of a single wave corresponding to 4 electrons in acid media and 2 electrons in alkaline ones. The wave splite into two daughter waves in media of pH≥10, the more negative wave increases in height at the expense of ihe original one with rise of pH. The reduction waves are essentially diffusion controlled with one proton and two electrons in the rate determining step. The electrode reaction is discussed and the important kinetic parameters are determined.
Databáze:	OpenAIRE
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