Synthesis of η2-cyclooctene iridium and rhodium complexes supported by a novel P,N-chelate ligand and their reactivity toward hydrosilanes: facile Cl migration from metal to silicon via silylene complex intermediates and formation of a base-stabilised silylene complex
chlorosilylene ligand (PcyN-P,N)2Ir2H2(μ-Cl)(μ-H)(μ-SiClMes) (5). The reaction of 1 with HSiMe2SiMes2Me occurred at room temperature to afford HSiMesMe2 and a silylcomplex 6 formed by metallation of an ortho-methyl group of Mes, which slowly dimerised to give a dinuclearcomplex containing a chlorosilyl ligand (PcyN-P,N)2Ir2H(μ-Cl)(μ-H)[μ-SiMeCl(C6H3-2,4-Me2-6-CH)-Si,C,C] (7). The formation of complexes 5, 6
η 2 -Cyclooctene铱 和 铑带有P,N-螯合物C 6 H 3 Me-3-PCy 2 -4-NMe 2的配合物(缩写为P CY ñ), (P CY N- P,Ñ)的MC1(η 2 -COE)(1:M =铱,2:M =铑)的合成,并研究了对几种空间受阻的氢硅烷的反应,以阐明它们的反应性。的反应1用H 2 SIMES 2(MES =平庸 = 2,4,6-三甲基苯基)在40°C下进行铱络合物由氯亚甲硅烷基配体(P cy N- P,N)2 Ir 2 H 2(μ-Cl)(μ-H)(μ-SiClMes)桥接(5)。1与HSiMe 2 SiMes 2 Me的反应在室温下发生,得到HSiMesMe 2和由Mes的邻甲基金属化形成的甲硅烷基络合物6,缓慢地二聚生成含氯甲硅烷基配体的二核络合物(P cy N- P,N)2 Ir 2 H(μ-Cl)(μ-H)[μ-SiMeCl(C6 H 3 -2,4-Me
Synthesis and Structure of PNP-Supported Iridium Silyl and Silylene Complexes: Catalytic Hydrosilation of Alkenes
作者:Elisa Calimano、T. Don Tilley
DOI:10.1021/ja903737j
日期:2009.8.12
silylene complexes [(PNP)(H)Ir=SiR(H)][B(C(6)F(5))(4)] (R = Trip (12), Dmp (13)) exhibiting downfield (29)Si NMR resonances (234 ppm (12), 226 ppm (13)) and downfield (1)H NMR resonances for the Si-H group (10.76 ppm (12), 9.76 ppm (13)). Thermallystable disubstituted silylene complexes [(PNP)(H)Ir=SiPh(2)][A] (A = (-)B(C(6)F(5))(4) (14), (-)CB(11)H(6)Br(6) (16)) were isolated via hydride abstraction
Multiple Si–H Bond Activations by <sup><i>t</i></sup>Bu<sub>2</sub>PCH<sub>2</sub>CH<sub>2</sub>P<sup><i>t</i></sup>Bu<sub>2</sub> and <sup><i>t</i></sup>Bu<sub>2</sub>PCH<sub>2</sub>P<sup><i>t</i></sup>Bu<sub>2</sub> Di(phosphine) Complexes of Rhodium and Iridium
作者:Meg E. Fasulo、Elisa Calimano、J. Matthew Buchanan、T. Don Tilley
DOI:10.1021/om300943e
日期:2013.2.25
3-dihydro-1H-silaindole. A dtbpm-supported Ir complex, [(dtbpm)IrCl]2, was used to access the dinuclear bridging silylene complexes [(dtbpm)IrH](μ-SiPh2)(μ-Cl)2[(dtbpm)IrH] (12) and [(dtbpm)IrH](μ-SiMesCl)(μ-Cl)(μ-H)[(dtbpm)IrH] (13). The reaction of [(dtbpm)IrCl]2 with a sterically bulky primary silane, (dmp)SiH3 (dmp = 2,6-dimesitylphenyl), allowed isolation of the mononuclear complex (dtbpm)Ir(H)4(10-chloro-1-mesityl-5
Formation of a sterically crowded iridium(III)-silyl complex from the bulky terphenyl silane H3Si(C6H3Mes2-2,6)
作者:Richard S Simons、Matthew J Panzner、Claire A Tessier、Wiley J Youngs
DOI:10.1016/s0022-328x(03)00629-6
日期:2003.9
(Et2PhP)3(Cl)Ir (4) as orange crystals in good yield (80%). The 1H- and 31P-NMR data are consistent with the structure of 4. The structure of 4 was determined by X-ray crystallography. The sterically hindered iridium(III)-silyl complex 5 is prepared in 63% yield by the reaction of 4 and H3Si(C6H3Mes2-2,6) (Eq. 5). Complex 5 is isolated as colorless crystals that are thermally stable up to the temperature
Silane–Allyl Coupling Reactions of Cp*(<sup><i>i</i></sup>Pr<sub>2</sub>MeP)Fe(η<sup>3</sup>-C<sub>3</sub>H<sub>5</sub>) and Synthetic Access to the Hydrido–Dinitrogen Complex Cp*(<sup><i>i</i></sup>Pr<sub>2</sub>MeP)FeH(N<sub>2</sub>)
作者:Patrick W. Smith、T. Don Tilley
DOI:10.1021/acs.organomet.5b00184
日期:2015.6.8
Herein we report reactions of the iron allyl complex Cp*((Pr2MeP)-Pr-i)Fe(eta(3)-C3H5) with sterically demanding silanes. These reactions lead to stoichiometric hydrosilation of the allyl ligand and dehydrocoupling reactions between the silane and the allyl group. Furthermore, this system has allowed access to a novel Si-H oxidative addition reductive elimination equilibrium involving Cp*(iPr(2)MeP)FeH2(SiH2DMP) and Cp*((Pr2MeP)-Pr-i)FeH(N-2), which was independently synthesized.