Rare earth metal bis(alkyl) complexes bearing a monodentate arylamido ancillary ligand: Synthesis, structure, and Olefin polymerization catalysis
作者:Yunjie Luo、Masayoshi Nishiura、Zhaomin Hou
DOI:10.1016/j.jorganchem.2006.06.048
日期:2007.1
equiv. of the amine ligand 2,6-iPr2C6H3NH(SiMe3) gave the corresponding amido-ligated rare earth metal bis(alkyl) complexes [2,6-iPr2C6H3N(SiMe3)]Ln(CH2SiMe3)2(thf) (Ln = Sc (1), Y (2), Ho (3), Lu (4)), which represent rare examples of bis(alkyl) rare earth metal complexes bearing a monodentate anionic ancillary ligand. In the case of Gd, a similar reaction gave the bimetallic complex Gd2(μ-CH2SiMe2NC6H3iPr2-2
Ln(CH 2 SiMe 3)3(thf)2与1当量的反应 胺配体2,6 - i Pr 2 C 6 H 3 NH(SiMe 3)得到相应的酰胺基连接的稀土金属双(烷基)络合物[ 2,6 - i Pr 2 C 6 H 3 N(SiMe 3)。)] Ln(CH 2 SiMe 3)2(thf)(Ln = Sc(1),Y(2),Ho(3),Lu(4)),代表带有单齿阴离子辅助配体的双(烷基)稀土金属络合物的稀有实例。在钆的情况下,类似的反应,得到双金属络合物的Gd 2(μ-CH 2森达2 NC 6 H ^ 3我镨2 -2,6)3(THF)3(5)通过分子内CH一个的激活Gd–CH 2 SiMe 3在酰胺配体上形成Me 3 Si的甲基,随后配体重新分布。配合物1 – 5在结构上通过X射线分析进行了表征。用1当量的[Ph3 C] [B(C 6 ˚F 5)4 ]在室温下甲苯,复合物1 - 4显示出高活性异戊二烯的活性聚合。的1