Synthesis, structure and polymerization catalytic properties of doubly bridged bis(cyclopentadienyl) dinuclear titanium and zirconium complexes
作者:Shansheng Xu、Xuliang Dai、Tao Wu、Baiquan Wang、Xiuzhong Zhou、Linhong Weng
DOI:10.1016/s0022-328x(01)01375-4
日期:2002.2
series of doubly bridged dinuclear titanium and zirconium complexes (Me2C)(Me2E)(C5H3)2(Cp′MCl2)2 [E=Si, Cp′=C5H5, M=Ti (1), Zr (2); E=Ge, Cp′=C5H5, M=Ti (3), Zr (4); Cp′=C5Me4H, M=Zr, E=Si (5), Ge (6)] and (Me2SiOSiMe2)2(C5H3)2(Cp′MCl2)2 [Cp′=C5H5, M=Ti (7), Zr (8); Cp′=C5Me4H, M=Zr (9)] were synthesized by the reaction of the lithium compounds of the corresponding doubly bridged cyclopentadienyl
一系列双桥双核钛和锆配合物(Me 2 C)(Me 2 E)(C 5 H 3)2(Cp'MCl 2)2 [E = Si,Cp'= C 5 H 5,M = Ti (1),Zr(2);E = Ge,Cp'= C 5 H 5,M = Ti(3),Zr(4);Cp'= C 5 Me 4 H,M = Zr,E = Si(5),Ge(6)]和(Me 2 SiOSiMeMe 2)2(C 5 H 3)2(Cp'MCl 2)2 [Cp'= C 5 H 5,M = Ti(7),Zr(8);通过相应的双桥环戊二烯基配体的锂化合物与CpTiCl 3,CpZrCl 3(THF)2或C 5 Me 4 HZrCl 3的反应合成Cp'= C 5 Me 4 H,M = Zr(9)] 。分别。这些配合物通过1 H-NMR,MS和元素分析进行表征。4的晶体结构通过X射线衍射确定。在MAO存在下,还研究了它们对乙烯聚合的催化性能。