Polarographic Study of Some Arylidene-2-Pyridylhydrazones

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Journal Title, Volume, Page: 
An-Najah University Journal for Research, Natural Sciences - Volume 7, Issue 1
Year of Publication: 
1992
Authors: 
Mohammed A. Hannoun
Department of Chemistry , Faculty of Science , An-Najah National University, Nablus
Current Affiliation: 
Faculty of Medicine & Health Sciences, Department of Pharmacy, An-Najah National University, Nablus, Palestine
Jamal S. Shalabi
Mohammed A. Al-Nuri
Department of Chemistry , Faculty of Science , An-Najah National University, Nablus
Ali Z. Abu-Zuhri
Department of Chemistry , Faculty of Science, United Arab Emirates University , Al-Ain , U. A. E
Preferred Abstract (Original): 

The polarographic behaviors of some arylidene-2-pyridyl hydrazones have been studied in aqueous Britton - Robinson buffer solution containing 40% ethanol using DC polarographic technique. In the pH range 1.9 - 6.4 the observed single irreversible 4 - electron reduction wave is attributed to the splitting of the N - N bond and saturation of C = N centre. All compounds studied are polarographically inactive in alkaline medium. The effect of pH on the limiting current and E 112 as well as the reduction mechanism and the effect of substituent's are discussed and compared with similar compounds. The kinetic parameters of the electrode reaction have been calculated.

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