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Salt effects upon the S2O82− + Ru(NH3)5pz2+ electron transfer reaction

✍ Scribed by A. Rodríguez; P. López-cornejo; P. Pérez; F. Muriel; F. Sánchez; John Burgess

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
132 KB
Volume
31
Category
Article
ISSN
0538-8066

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✦ Synopsis

A study of the kinetic salt effects on the oxidation of Ru(NH 3 ) 5 pz 2ϩ (Pirazinepentaammineruthenium (II)) with (Peroxodisulphate) was carried out. The components of 2Ϫ S O 2 8

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.

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