Polarographic Study of Some Arylidene-2-Pyridylhydrazones

Polarographic Study of Some Arylidene-2-Pyridylhydrazones

Ali Z. Abu-Zuhri, Mohammed A. Al-Nuri, Mohammed A. Hannoun, and Jamal S. Shalabi

Present address: Department of Chemistry, Faculty of Science, United Arab Emirates University, Al-Ain, UAE; This work is taken from the M. Sc. Thesis of Jamal S. Shalabi Department of Chemistry, Faculty of Science, An-Najah National University - Nablus.

Received : 00-00-0000 , Accepted : 00-00-0000

Language: English

Abstract

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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