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Electrochemical Reduction of 1,2-Di(p-tolylimino)ethane and 1,2-Di(2,4-dimethylphenylimino)ethane in Dimethylformamide

✍ Scribed by Lida FOTOUHI; Mahbobeh ZEIENALI; Saeed DEHGHANPOUR; Davood NEMATOLLAHI

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
76 KB
Volume
25
Category
Article
ISSN
0256-7660

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✦ Synopsis

Abstract

1,2‐Di(p‐tolylimino)ethane (I) and 1,2‐Di(2,4‐dimethylphenylimino)ethane (II) were synthesized and their electrochemical behavior investigated in dimethylformamide using classical voltammetry, differential pulse voltammetry, cyclic voltammetry, chronoamperometry, controlled potential electrolysis and coulometry. Both bis‐Schiff base ligands examined show a cathodic irreversible peak which corresponds to one‐electron reduction of the substrate to form anion radical. According to the fact obtained from cyclic voltammetry, that the current function (i~p~/ù^1/2^) is a decreasing function of the scan rate, it can be concluded that there is a following coupling chemical reaction (EC mechanism). Thus, the most probable mechanism of electroreduction of both ligands is the coupling of two radicals to form a dimer.

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