Polarographic behaviour of 2,2?-dipyridyl-2-pyridylhydrazone (DPPH) and pyridine-2-aldehyde-2-quinolylhydrazone (PAQH) at the dropping mercury electrode

Zuhri, Ali Z. Abu; Shalabi, Jamal S.

doi:10.1007/bf00810638

Cited by 4 publications

(1 citation statement)

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“…Following our studies on the polarographic behaviour of nitrogen-containing hetercocyclic hydrazones (16)(17)(18) , we investigate the polarographic behaviour of some arylidene 2-pyridyl hydrazones to elucidate the nature and mechanism of electrode process and to test the applicability of the polarographic method for quantitative determination of these hydrazones . No work on these compounds from the present standpoint has been published .…”

Section: Introductionmentioning

confidence: 99%

Polarographic Study of Some Arylidene-2-Pyridylhydrazones

Shalabi¹,

Al-Nuri²,

A³

1992

An-Najah University Journal for Research - A

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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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Section: Introductionmentioning

confidence: 99%