Artículos de revistas
Oxygen Atom Transfer Reactions from Mimoun Complexes to Sulfides and Sulfoxides. A Bonding Evolution Theory Analysis
Fecha
2014-08-07Registro en:
Journal Of Physical Chemistry A. Washington: Amer Chemical Soc, v. 118, n. 31, p. 6092-6103, 2014.
1089-5639
10.1021/jp504172g
WOS:000340222500040
Autor
Universidade Estadual Paulista (Unesp)
Univ Jaume 1
Universidade Federal de São Paulo (UNIFESP)
Universidade Federal de São Carlos (UFSCar)
Institución
Resumen
In this research, a comprehensive theoretical investigation has been conducted on oxygen atom transfer (OAT) reactions from Mimoun complexes to sulfides and sulfoxides. The joint use of the electron localization function (ELF) and Thom's catastrophe theory (CT) provides a powerful tool to analyze the evolution of chemical events along a reaction pathway. The progress of the reaction has been monitored by structural stability domains from ELF topology while the changes between them are controlled by turning points derived from CT which reveal that the reaction mechanism can be separated in several steps: first, a rupture of the peroxo O-1-O-2 bond, then a rearrangement of lone pairs of the sulfur atom occurs and subsequently the formation of S-O-1 bond. The OAT process involving the oxidation of sulfides and sulfoxides is found to be an asynchronous process where O-1-O-2 bond breaking and S-O-1 bond formation processes do not occur simultaneously. Nudeophilic/electrophilic characters of both dimethyl sulfide and dimethyl sulfoxide, respectively, are sufficiently described by our results, which hold the key to unprecedented insight into the mapping of electrons that compose the bonds while the bonds change.