TY - JOUR
T1 - Reactions of cation radicals of EE systems. 10. The influence of ion association on cation radical disproportionation
AU - Bancroft, Eric E.
AU - Pemberton, Jeanne E.
AU - Blount, Henry N.
PY - 1980
Y1 - 1980
N2 - Disproportionation equilibria of the cation radicals of 10-phenylphenothiazine, thianthrene, and 9,10-diphenylanthracene have been voltammetrically characterized in acetonitrile, butyronitrile, nitrobenzene, and methylene chloride containing hexafluorophosphate, tetrafluoroborate, and perchlorate supporting electrolytes. Disproportionation was observed to be significantly influenced by associative interactions between the oxidized forms of the substrates and the anions of the supporting electrolytes. Disproportionation was found to be favored by anions of greater ionic potential. This anion effect in associated systems was observed to be "leveled" by solvents of increased polarity. In the absence of ion association, disproportionation was found to be favored by more polar solvents.
AB - Disproportionation equilibria of the cation radicals of 10-phenylphenothiazine, thianthrene, and 9,10-diphenylanthracene have been voltammetrically characterized in acetonitrile, butyronitrile, nitrobenzene, and methylene chloride containing hexafluorophosphate, tetrafluoroborate, and perchlorate supporting electrolytes. Disproportionation was observed to be significantly influenced by associative interactions between the oxidized forms of the substrates and the anions of the supporting electrolytes. Disproportionation was found to be favored by anions of greater ionic potential. This anion effect in associated systems was observed to be "leveled" by solvents of increased polarity. In the absence of ion association, disproportionation was found to be favored by more polar solvents.
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U2 - 10.1021/j100457a015
DO - 10.1021/j100457a015
M3 - Article
AN - SCOPUS:0012929806
SN - 0022-3654
VL - 84
SP - 2557
EP - 2560
JO - Journal of physical chemistry
JF - Journal of physical chemistry
IS - 20
ER -