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Salt effects upon the S 2 O 8 2− + Ru(NH 3 ) 5 pz 2+ electron transfer reaction
Author(s) -
Rodríguez A.,
Lópezcornejo P.,
Pérez P.,
Muriel F.,
Sánchez F.,
Burgess John
Publication year - 1999
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/(sici)1097-4601(1999)31:7<485::aid-kin3>3.0.co;2-6
Subject(s) - chemistry , salt (chemistry) , electron transfer , reaction rate constant , kinetic energy , constant (computer programming) , kinetics , transfer (computing) , thermodynamics , physics , quantum mechanics , parallel computing , computer science , programming language
A study of the kinetic salt effects on the oxidation of Ru(NH 3 ) 5 pz 2+ (Pirazinepentaammineruthenium (II)) with S 2 O 8 2− (Peroxodisulphate) was carried out. The components of the experimental rate constant, k obs , were separated, and the true (unimolecular) electron transfer rate constant, k et , is (approximately) obtained. An analysis of the main parameters controlling the variations of k et , the free energies of reaction and reorganization, is made. Both parameters show a compensating behavior, so there are small variations of k et and k obs when salt concentrations change. © 1999 John Wiley & Sons, Inc. Int J Chem Kinet 31: 485–490, 1999