result in disproportionation. In the case of CO we show that reactions in the solid state afford selectivity for and isolation of the reaction intermediate (IPr)Ni(κ1-N-N(iPr)C(O)tBu)(CO) ([2-CO]), which is not isolable by solution methods. Kinetic analysis of the disproportionation reaction with alkenes suggests that the reaction is first order in both nickel and alkene. Preliminary trapping experiments
所述N-杂环卡宾支持三维坐标的Ni(I)配合物(IPR)的Ni(κ 1 - ñ -N(我PR)C(O)吨卜)(CNXyl)([ 2-CNXyl ]; CNXyl = 2, 6-二甲基苯基异
氰化物)与1当量的CNXyl歧化,得到等摩尔的Ni(0)和Ni(II)配合物(IPr)Ni(CNXyl)3([ 3-CNXyl ])和(IPr)Ni(κ 2 - N,O -N(i Pr)CO(t Bu))2([ 4 ])。当将2当量的异腈CNXyl添加到(IPr)Ni(κ)中时,也会生成复合物[ 3-CNXyl ]和[ 4 ]3 - N,双(H 2 C Me)-N(i Pr)C(O)t Bu)([ 1 ])。此外,我们表明与π受体CO和选择的烯烃的反应也导致歧化。在CO的情况下,我们表明,在固体状态下的反应得到的选择性和反应的隔离中间体(IPR)的Ni(κ 1 - ñ -N(我PR)C(O)吨卜)(CO)([