Radical Products in the Chemical Oxidationof Amines. An ESR Study of Secondary CationRadicals from Aniline and Derivatives of 1,2-Phenylenediamine |
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| Authors: | Ladislav Omelka Silvie Ondrášová Lothar Dunsch Andreas Petr Andrej Staško |
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| Institution: | 1.?Faculty of Chemistry, Technical University of Brno, CZ-61200 Brno, Czech Republic,CZ;2.?Institut für Festk?rperforschung im IFW Dresden e. V., Abteilung Elektrochemie und leitf?hige Polymere, D-01069 Dresden, Germany,DE;3.?Department of Physical Chemistry, Slovak Technical University, SK-81237 Bratislava, Slovakia,SK |
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| Abstract: | Summary. The oxidation of aniline and some derivatives of 1,2-phenylenediamine was performed by the system Pb(CH3COO)4—CF3COOH—CH2Cl2. An ESR investigation of the oxidized aniline confirmed the presence of secondary cation radical. Its structure was determined
by comparison of its ESR spectrum with those of cation radicals prepared from derivatives of 1,4-phenylenediamine. The oxidation
of 1,2-phenylenediamine and its derivatives leads to the formation of either primary or secondary cation radicals, the latter
having the character of substituted dihydrophenazinium cation radicals.
Received August 17, 2000. Accepted (revised) October 16, 2000 |
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| Keywords: | , ,Aniline, 1,4-Phenylenediamine, 1,2-Phenylenediamine, Cation radicals, ESR, |
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