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IJC-A Vol.50A(03-04) [March-April 2011] >

Title: Oxidation of dibenzothiophene by mononuclear non-heme iron complexes: A biomimetic approach for oxidative desulphurization
Authors: Vardhaman, Anil Kumar
Sikdar, Subhajit
Sastri, Chivukula V
Keywords: Bioinorganic chemistry
Oxidative desulphurization
Issue Date: Mar-2011
Publisher: NISCAIR-CSIR, India
Abstract: Dibenzothiophene (DBT), a common component of crude oil, is a widespread environmental pollutant with known adverse effects. Oxidation of DBT to dibenzothiophene sulfone has been examined using in situ generated high-valent oxo-iron(IV) complexes. The reactivities and the corresponding thermodynamic parameters are evaluated and compared with those for simple S-oxidation (thioanisole) reactions. Among the catalysts examined, [FeII(Bn-Tpen)]2+ is found to be a more efficient oxidant over [FeII(N4Py)]2+. The order of the reactivity and the evaluated thermodynamic parameters signify the role of the electron delocalization due to benzene rings for DBT oxidation.
Page(s): 427-431
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.50A(03-04) [March-April 2011]

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