Study of electroreduction of 2-benzoyl-pyridine hydrazone and azine by direct current and differential pulse polarography

Nieto, Mar; Castro, M. D. Luque de; Valcárcel, Miguel

doi:10.1016/0013-4686(83)87005-4

Cited by 13 publications

(2 citation statements)

References 17 publications

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“…Evidently , the reduction involves an N N bond cleavage followed by a C = N bond saturation . This behaviour is similar to the one proposed by Lund ( 12) , Gomez, et al (21) . and recently by us It was found that the DC wave could have been used for analytical purposes .…”

Section: Reduction Mechanismsupporting

confidence: 91%

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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: Reduction Mechanismsupporting

confidence: 91%

“…It is an evidence that , the E 112 of the polarographic wave is shifted to more negative values by increasing the concentration of the depolarizer. This phenomenon has been observed in the reduction of organic compounds (21,22,23) and is characteristic of the irreversible processes .…”

Section: Reduction Mechanismmentioning

confidence: 84%