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Electrolyte effects on mixed valence state stability of an electropolymerized bis(fulvalene)diiron film
Author(s) -
Nishihara Hiroshi,
Nakagawa Toshie,
Aramaki Kunitsugu
Publication year - 1996
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/elan.1140080824
Subject(s) - comproportionation , valence (chemistry) , chemistry , cyclic voltammetry , electrolyte , counterion , electrochemistry , acetonitrile , metal , delocalized electron , inorganic chemistry , ion , analytical chemistry (journal) , electrode , organic chemistry
Cyclic voltammetry and spectroelectrochemistry of an electropolymerized film of [Fe 2 (C 10 H 8 )(C 10 H 7 CClCHCHO)] (1) were carried out in acetonitrile with Bu 4 NPF 6 , Bu 4 NBF 4 , Bu 4 NClO 4 or Bu 4 NHSO 4 to determine how the two parameters concerning the stability of the mixed valence state, comproportionation constant, K c , and mixing coefficient, α, depend on the type of counterions. The difference in electrolyte anions causes slight changes in α exhibiting the magnitude of delocalization of charge between two metal centers. However, significant changes in K c , suggest that the ion‐pairing and electrostatic repulsion are main factors that alter the electrochemical stability of the mixed valence state.