Kinetics and mechanism of ruthenium (III)-catalysed oxidation of pyrimidine bases by peroxydiphosphate in aqueous perchloric acid medium

Authors
Latha, BS Adinarayana, M Rao, PJ
Citation
Bs. Latha et al., Kinetics and mechanism of ruthenium (III)-catalysed oxidation of pyrimidine bases by peroxydiphosphate in aqueous perchloric acid medium, I J CHEM A, 38(11), 1999, pp. 1184-1187
Citations number
11
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
38
Issue
11
Year of publication
1999
Pages
1184 - 1187
Database
ISI
SICI code
0376-4710(199911)38:11<1184:KAMOR(>2.0.ZU;2-E
Abstract
Kinetics and mechanism of Ru(III) - catalysed oxidation of pyrimidine bases by peroxydiphosphate (PDP) have been studied in aqueous perchloric acid me dium. The reaction is first order each in [PDP] and [Ru(III)] and the rate is independent of [substrate]. The reaction is insensitive towards changes in acid concentration while the effect of ionic strength is negligible on t he rate of oxidation. The reactions have been studied at different temperat ures and activation parameters evaluated. A mechanism, involving the two-el ectron oxidation of Ru(III) by PDP in a slow step, is proposed.