Synthese, Charakterisierung und Polymerisationseigenschaften verbrückter Halbsandwichkomplexe des Titans, Zirconiums und Hafniums; Die Molekülstruktur von [C13H8-SiMe2-NtBu]ZrCl2
作者:Helmut G. Alt、Klaus Föttinger、Wolfgang Milius
DOI:10.1016/s0022-328x(98)00527-0
日期:1999.1
The synthesis of new ansa halfsandwich complexes of the type [Cp#-SiMe2-NtBu]MCl2 (Cp#=C13H8, C9H6, C5H4, C5H3tBu; M=Zr, Hf) as catalyst precursors for the polymerization of ethylene is described. The complexes were characterized by 1H-, 13C-, 29Si-, 15N- and 14N-NMR spectroscopy. From [C13H8-SiMe2-NtBu]ZrCl2 an X-ray structure was obtained. The activities of the catalysts and the properties of the
[Cp # -SiMe 2 -N t Bu] MCl 2(Cp # = C 13 H 8,C 9 H 6,C 5 H 4,C 5 H 3 t Bu; M描述了作为乙烯聚合的催化剂前体的= Zr,Hf)。该复合物通过1 H-,13 C-,29 Si-,15 N-和14 N-NMR光谱表征。从[C 13 H 8 -SiMe 2得到-N t Bu] ZrCl 2的X射线结构。研究了催化剂的活性和聚合物的性能。讨论了催化剂结构对聚合行为的影响。