مشخصات پژوهش

عنوان	Synthesis, crystal structure and catalytic activity of an oxo-diperoxo tungsten(VI) complex containing an oxazine ligand for selective oxidation of sulfides
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Oxo-diperoxo; tungsten; oxazine ligand; oxidation of sulfides; sulfoxide
چکیده	A novel oxo-diperoxo tungsten(VI) complex, [WO(O2)2(Hphox)], was prepared by reaction of WO3 in H2O2 with an oxazine-type ligand, 2-(20-hydroxylphenyl)oxazine (Hphox). The complex was characterized by FTIR, 1H NMR and elemental analysis. The singlecrystal X-ray diffraction studies revealed a seven-coordinate tungsten center with a distorted octahedral geometry. The [WO(O2)2(Hphox)] complex was applied as a catalyst in efficient and selective oxidation of sulfide to sulfoxide using 30% H2O2 or UHP (urea hydrogen peroxide) as oxidants. This catalyst showed excellent catalytic activities and high selectivities in producing a variety of aryl and alkyl sulfoxides under mild conditions. To get an insight into the mechanisms of oxidation of sulfides, the mechanistic studies were monitored by UV–Vis spectroscopy.
پژوهشگران	مجتبی امینی (نفر پنجم)، علی اکبری (نفر چهارم)، علیرضا عباسی (نفر سوم)، پروین اسماعیل پور (نفر دوم)، مجتبی باقرزاده (نفر اول)