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Kinetic, mechanistic and spectral investigations of ruthenium(III)/osmium(VIII)-catalysed oxidation of paracetamol by alkaline diperiodatoargentate(III) (stopped flow technique)

Paper ID Volume ID Publish Year Pages File Format Full-Text
43866 45992 2006 11 PDF Available
Title
Kinetic, mechanistic and spectral investigations of ruthenium(III)/osmium(VIII)-catalysed oxidation of paracetamol by alkaline diperiodatoargentate(III) (stopped flow technique)
Abstract

The kinetics of the oxidation of ruthenium(III)- and osmium(VIII)-catalysed oxidation of paracetamol by diperiodatoargentate(III) (DPA) in aqueous alkaline medium at a constant ionic strength of 0.10 mol dm−3 was studied spectrophotometrically. The reaction between DPA and paracetamol in alkaline medium exhibits 2:1 stoichiometry in both catalysed reactions (DPA:PAM). The main products were identified by spot test, IR, NMR and GC–MS. Probable mechanisms are proposed and discussed. The activation parameters with respect to the slow step of the mechanism are computed and discussed and thermodynamic quantities are also calculated. It has been observed that the catalytic efficiency for the present reaction is in the order of Os(VIII) > Ru(III). The active species of catalyst and oxidant have been identified.

Keywords
Kinetics; Diperiodatoargentate(III); Oxidation; Paracetamol; Ruthenium(III) catalysis; Os(VIII) catalysis
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Kinetic, mechanistic and spectral investigations of ruthenium(III)/osmium(VIII)-catalysed oxidation of paracetamol by alkaline diperiodatoargentate(III) (stopped flow technique)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 305, Issue 1, 17 May 2006, Pages 79–89
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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