Synthesis and catalytic activity of dinuclear imido titanium complexes: the molecular structure of [Ti(NPh)Cl(μ-Cl)(THF)2]2
作者:Dale A. Pennington、Peter N. Horton、Michael B. Hursthouse、Manfred Bochmann、Simon J. Lancaster
DOI:10.1016/j.poly.2004.10.006
日期:2005.1
Reaction of TiCl4 with the reagents RN(SiMe3)2 in dichloromethane precipitates red to black powders (R = 1-adamantyl, phenyl, pentafluorophenyl, 3,5-bis(trifluoromethyl)phenyl), which on treatment with tetrahydrofuran gives the new THF adducts [Ti(NR)Cl(μ-Cl)(THF)2]2. The complexes are dimeric in the solid state with bridging chloride and terminal imido ligands. Activation with MAO (methylaluminoxane)
TiCl 4与试剂RN(SiMe 3)2在二氯甲烷中的反应沉淀为红色至黑色粉末(R = 1-金刚烷基,苯基,五氟苯基,3,5-双(三氟甲基)苯基),将其经四氢呋喃处理后得到新的粉末THF加合物[Ti(NR)Cl(μ-Cl)(THF)2 ] 2。配合物是固态的二聚体,带有桥连的氯化物和末端亚氨基配体。用MAO(甲基铝氧烷)活化得到的乙烯聚合催化剂的生产率最高为31 kg PE [(摩尔配合物)h bar] -1。