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Electrochemical Reduction of 1,2‐Di( p ‐tolylimino)ethane and 1,2‐Di(2,4‐dimethylphenylimino)ethane in Dimethylformamide
Author(s) -
FOTOUHI Lida,
ZEIENALI Mahbobeh,
DEHGHANPOUR Saeed,
NEMATOLLAHI Davood
Publication year - 2007
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200790291
Subject(s) - chemistry , cyclic voltammetry , chronoamperometry , coulometry , dimethylformamide , electrochemistry , electrolysis , bulk electrolysis , inorganic chemistry , voltammetry , differential pulse voltammetry , dimer , photochemistry , organic chemistry , electrode , solvent , electrolyte
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.