1256485-80-9Relevant academic research and scientific papers
Facile Deep and Ultradeep Hydrodesulfurization by the [(iPr3P)Ni]5H6 Cluster Compared to Mononuclear Ni Sources
Shoshani, Manar M.,Johnson, Samuel A.
, p. 11977 - 11985 (2015)
The pentanuclear nickel cluster [(iPr3P)Ni]5H6 facilitates the room-temperature hydrodesulfurization of dibenzothiophene, 4-methyldibenzothiophene, and 4,6-dimethydibenzothiophene. These reactions provide the new tetranuclear nickel hydride sulfide [(iPr3P)Ni]4(μ-H)4(μ4-S) (1). In comparison, the dinuclear dinitrogen nickel complex [(iPr3P)2Ni]2(μ-N2) undergoes oxidative addition of the C-S bonds of dibenzothiophene and 4-methyl dibenzothiophene to provide the metallacycles Ni3(PiPr3)3C12H8S (2) and Ni3(PiPr3)3C13H10S (3), respectively, but 4,6-dimethydibenzothiophene is unreactive, even with heating to 70°C for a week. The reaction of [(iPr3P)Ni]5H6 with SPiPr3 in toluene provided [(iPr3P)Ni]5H6(S) (4), which was observed and characterized by NMR spectroscopy. The addition of vinyltrimethylsilane to 4 provided the best synthetic route to 1, with (iPr3P)Ni(η2-CH2=CHSiMe3)2 (5) generated as a byproduct.
