مشخصات پژوهش

عنوان	Synthesis and characterization of two binuclear nickel(II) complexes of thiophenol-based “end-off” compartmental ligands and their application as catalysts for selective oxidation of sulfides
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Binuclear Ni(II) complexes; single crystal X-ray diffraction study; sulfide; oxidation
چکیده	Reaction of the binucleating S-protected ligand precursors 2-(N,Ndimethylthiocarbamato)- 5-methylisophthalaldehyde di-2′-hydroxy anil (I) and 2-(N,N-dimethylthiocarbamato)-5-methylisophthalaldehyde di-2′- hydroxy 5′-methyl anil (II) with nickel(II) acetate tetrahydrate in the presence of pyrazole afforded the binuclear nickel(II) complexes [LINi2(pz)] (1) and [LIINi2(pz)] (2), respectively. The complexes have been characterized by routine physicochemical studies as well as by X-ray single crystal structure analysis. In both complexes, Ni(II) ions are doubly bridged by the thiophenolic sulfur of the pentadentate Schiff base ligand and a pyrazolate group. Efficient protocols for the oxidation of sulfides to sulfoxides with high selectivities, catalyzed by binuclear μ-thiophenolato-μ-pyrazolatonickel(II) in the presence of urea hydrogen peroxide (UHP) were explored. We obtained predominantly the monooxygenated product. The resulting products are obtained in good to excellent yields within a reasonable time.
پژوهشگران	داور بقایی (نفر پنجم)، مجتبی باقرزاده (نفر چهارم)، عبدالجلیل اسوند (نفر سوم)، نرجس خدیر (نفر اول)، مجتبی امینی (نفر دوم)