title: The role of nonbonded sulfur-oxygen interaction in the dissociative electron transfer to nitro-substituted arenesulfenyl chlorides.
abstract: The electrochemical reduction of p-nitrophenyl sulfenyl chloride, o-nitrophenyl sulfenyl chloride as well as bis(4-nitrophenyl) disulfide and bis(2-dinitrophenyl) disulfide was investigated in acetonitrile at an inert electrode. Reduction standard potentials as well standard heterogeneous electron-transfer rate constants have been determined using convolution analysis. An unexpected big difference in the thermodynamics and kinetics of the initial electron-transfer process as well as a striking change in the reductive cleavage mechanism of the S-Cl bond as a function of the nitro group position on the aryl ring of the aryl sulfenyl chloride is observed. A computational study at the B3LYP level shows that this difference in behavior is due to the through-space nonbonded S...O interaction in the o-nitrophenyl sulfenyl chloride.
authors.affiliation: Department of Chemistry and Biochemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1.
authors.forename: Chang
authors.initials: C
authors.lastname: Ji
authors.forename: John D
authors.initials: JD
authors.lastname: Goddard
authors.forename: Abdelaziz
authors.initials: A
authors.lastname: Houmam