Metal-ion oxidations in solution. Part XIX. Redox pathways in the oxidation of penicillamine and glutathione by chromium(VI)
- 15 September 1977
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 55 (18) , 3335-3340
- https://doi.org/10.1139/v77-465
Abstract
Three moles of penicillamine or glutathione are required to reduce Cr(VI) to Cr(III). The kinetics and mechanism of the redox reaction were studied using the stopped-flow method. The reaction proceeds via the formation of a transient intermediate (K1) which decomposes either in a proton-catalyzed pathway or by reaction with a 2nd mole of thiol. Several Cr(III) products were identified by ion-exchange methods. The significance of the 2nd order pathways in these reactions is discussed.This publication has 1 reference indexed in Scilit:
- An alkaline solution of potassium chromate as a transmittancy standard in the ultravioletJournal of Research of the National Bureau of Standards, 1952