Comparative Study of Chromium(V) and Chromium(VI) Oxidation of Dialkyl Sulfides

Autor:	Jesuraja Bosco Bharathy, Tharumeya Kuppusamy Ganesan, Seenivasan Rajagopal
Rok vydání:	2000
Předmět:	chemistry.chemical_classification Aqueous solution Sulfide Chemistry Organic Chemistry Kinetics Inorganic chemistry chemistry.chemical_element Biochemistry Redox Electron transfer Chromium Nucleophile Drug Discovery Solvent effects
Zdroj:	Tetrahedron. 56:5885-5892
ISSN:	0040-4020
DOI:	10.1016/s0040-4020(00)00431-2
Popis:	The kinetics of the redox reaction of dialkyl sulfides, model compounds for methionine containing peptides, with Cr V and Cr VI has been studied spectrophotometrically in aqueous CH 3 CN. Both reactions follow overall second-order kinetics, first order each in sulfide and oxidant. The rate of the reaction with Cr V is two orders more than Cr VI . Based on the substituent and solvent effect an outer-sphere electron transfer mechanism has been proposed for Cr V oxidation. Two different mechanisms, one involving nucleophilic attack of sulfide on chromium and the other, an electron transfer from sulfide to Cr, has been proposed for the Cr VI oxidation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::992883ce522eb135324fb16650642d96 https://doi.org/10.1016/s0040-4020(00)00431-2 Zobrazit plný text záznamu Full Text from ScienceDirect