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Kinetic salt effects on the outer sphere electron transfer reaction between hexacyanoferrate(II) and 4‐pyridinecarboxylatopentammine cobalt(III)
Author(s) -
LÓPez P.,
Muñ;Oz E.,
SáNchez F.,
Galán M.
Publication year - 1992
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550241206
Subject(s) - chemistry , electron transfer , reaction rate constant , logarithm , electrolyte , salt (chemistry) , kinetic energy , cobalt , outer sphere electron transfer , inorganic chemistry , ion , reaction rate , kinetics , electrode , catalysis , organic chemistry , mathematical analysis , physics , mathematics , quantum mechanics
A study is made of the kinetic salt effects upon the outer‐sphere electron transfer reaction between hexacyanoferrate(II) and 4‐pyridinecarboxylatopentaamminecobalt(III). The observed salts effects are analyzed, taking into account the possible association of the reactants with the ions of the supporting electrolyte, though no conclusive results could be obtained. A correlation has been established between the logarithm of the observed second‐order rate constants and the logarithm of the rate constants for a related innersphere electron transfer reaction. From this correlation the conclusion can be drawn that the observed salt effects in concentrated electrolyte solutions are mainly due to the effects on the electron transfer step. © John Wiley & Sons, Inc.