Synthesis and characterization of some new organometallic complexes of nickel(II) containing trimethylphosphine
作者:Ernesto Carmona、Margarita Paneque、Manuel L. Poveda
DOI:10.1016/s0277-5387(00)80416-7
日期:1989.1
mixture of these two complexes indicate that both are involved in a fast equilibrium which interchanges the two types of benzylic ligands. The above mentioned compounds decompose in the presence of excess PMe3 with the formation of [NiCl2(PMe3)3], [Ni(PMe3)4] and the reductive elimination product (C6H5CH2)2. In addition, the synthesis and spectral characterization of the new complexes trans-[Ni(C6H5)X(PMe3)2]
摘要[Ni(cod)2] 2(cod = 1,5-环辛二烯)在1或2当量的PMe3存在下,氧化添加C6H5CH2Cl,得到[Ni(η3-CH2C6H5)Cl(PMe3)]或反式[Ni( η1-CH2C6H5)Cl(PMe3)2]。用这两种络合物的混合物进行的可变温度NMR研究表明,两者都参与快速平衡,该快速平衡使两种类型的苄基配体互换。上述化合物在过量的PMe3存在下分解,形成[NiCl2(PMe3)3],[Ni(PMe3)4]和还原消除产物(C6H5CH2)2。此外,新的配合物反式[Ni(C6H5)X(PMe3)2](X = Cl,Br),反式[Ni(2,4,6-C6H2Me3)X(PMe3) 2]也被描述(X = Cl,Br)和[(η5-C5H5)Ni(2,4,6-C6H2Me3)(PMe3)]。