Electrochemical reduction of 1,2,4,6-substituted pyridinium cations

In aprotic solvents such as dimethylformamide, acetonitrile or dimethylsulphoxide, the mechanism of electrochemical reduction of 1,2,4,6-substituted pyridinium cations was investigated. The stability of the key intermediate in the overall two-electron reduction, ie of the neutral radical, was increa...

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Bibliographic Details
Published in:Electrochimica acta 1994-09, Vol.39 (13), p.2049-2054
Main Authors: Volke, J., Urban, J., Volkeová, V.
Format: Article
Language:English
Subjects:
1-alkyl-2
6-tetraalkylpyridinium perchlorates
6-tetraphenylpyridinium perchlorate
6-triphenylpyridinium perchlorates
Chemistry
Electrochemistry
electroreduction
Exact sciences and technology
General and physical chemistry
Kinetics and mechanism of reactions
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Summary:In aprotic solvents such as dimethylformamide, acetonitrile or dimethylsulphoxide, the mechanism of electrochemical reduction of 1,2,4,6-substituted pyridinium cations was investigated. The stability of the key intermediate in the overall two-electron reduction, ie of the neutral radical, was increased by substituting the positions 2, 4 and 6 by phenyl groups. The measurements were carried out by dc polarography and cyclic voltammetry at mercury, platinum and carbon electrodes.
ISSN:0013-4686
1873-3859
DOI:10.1016/0013-4686(94)85087-9