1331784-69-0Relevant articles and documents
Synthesis and reactivity of a masked PSiP pincer supported nickel hydride
Suh, Hee-Won,Guard, Louise M.,Hazari, Nilay
, p. 37 - 43 (2014)
Tridentate PSiP pincer ligands featuring two phosphine donors and an anionic Si donor have attracted considerable attention in recent years. Here, we report the synthesis of the η3-cyclooctenyl complex, (PhPSiP)Ni(η3-cyclooctenyl) (1; PhPSiP = Si(Me)(2-PPh2-C6H4)2) through the reaction of Ni(COD)2 with PhPSiHP (PhPSiHP = HSi(Me)(2-PPh2-C6H4)2). We propose, that as a result of β-hydride elimination of 1,3-COD, 1 can act as a synthetic equivalent for (PhPSiP)NiH. The reaction of 1 with a variety of different reagents including another equivalent of PhPSiHP to form (PhPSiP)2Ni (2), 1,3-COD and H2, PPh3 to form the Ni(0) species (PhPSiHP)Ni(PPh3) (3) and 1,3-COD and 2,6-lutidine·HCl to generate (PhPSiP)NiCl (4), 1,3-COD and H2 are in agreement with this hypothesis. In addition, in the reaction of 1 with BH3·THF, (PhPSiP)Ni(κ2-BH4) (5) was observed but could not be isolated. This reaction presumably proceeds via (PhPSiP)NiH. This is supported by the observation that the reaction of (CyPSiP)NiH (CyPSiP = Si(Me)(2-PCy2-C6H4)2) with BH3·THF formed (CyPSiP)Ni(κ2-BH4) (6). Catalytic reactions such as alkene isomerization and CO2 reduction using 1 as precatalyst are also consistent with a nickel hydride being accessible. Compounds 1, 2 and 6 were characterized by X-ray crystallography.
Reaction of bis(o-phosphinophenyl)silane with M(PPh3) 4 (M = Ni, Pd, Pt): Synthesis and structural analysis of η2-(Si-H) metal(0) and pentacoordinate silyl metal(II) hydride complexes of the Ni triad bearing a PSiP-pincer
Takaya, Jun,Iwasawa, Nobuharu
, p. 8814 - 8821 (2011/10/09)
Reactions of bis(o-(diphenylphosphino)phenyl)methylsilane with M(PPh 3)4 (M = Ni, Pd, Pt) were investigated. When M = Ni or Pd, synthesis and isolation of η2-(Si-H) complexes of mononuclear Ni(0) and Pd(0) were achieved fo
