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Electrooxidative Desorption of Mg 2+ ‐Chloranil Dianion Salt Promoted by Solution Electron Transfer Mediators
Author(s) -
Oyama Munetaka
Publication year - 2002
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200202)14:4<277::aid-elan277>3.0.co;2-q
Subject(s) - chemistry , chloranil , desorption , cyclic voltammetry , tetrathiafulvalene , acetonitrile , electrochemistry , inorganic chemistry , electron transfer , molecule , salt (chemistry) , adsorption , photochemistry , electrode , organic chemistry
In the electrochemical reduction of p‐ chloranil with Mg 2+ in acetonitrile, the Mg 2+ salt of p‐ CA dianion (Mg 2+ p‐ CA 2− ) adsorbed on the electrode surface, whose amount corresponded to the deposition composed of over several monolyayers. By adding the molecules oxidized reversibly at appropriate potentials (ferrocene, 9,10‐diphenylanthracene or tetrathiafulvalene) into the solution containing p‐ CA and Mg 2+ , the electrochemical oxidation processes was observed after the formation of Mg 2+ p‐ CA 2− by cyclic voltammetry. Consequently, it was found that the oxidative desorption of Mg 2+ p‐ CA 2− occurred at the potential region where the coexisting molecules in solution phase were oxidized. Thus, the desorption of Mg 2+ p‐ CA 2− was clarified to be promoted by the oxidation of the coexisting molecules in solution, i.e. the solution electron transfer mediators.