{[2-(dimethylamino)ethyl]cyclopentadienyl} titanium complexes. Influence of the dimethylamino group in Ziegler-Natta polymerization catalysis

被引:48
作者
Flores, JC [1 ]
Chien, JCW [1 ]
Rausch, MD [1 ]
机构
[1] UNIV MASSACHUSETTS, DEPT POLYMER SCI & ENGN, DEPT CHEM, AMHERST, MA 01003 USA
关键词
D O I
10.1021/ma9604294
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
[2-(Dimethylamino)ethyl]-substituted cyclopentadienyltitanium complexes (3-6) have been synthesized and characterized. Structural data indicates intramolecular coordination of the dimethylamino group to titanium. The catalytic activities and selectivities for styrene, ethylene, and propylene polymerization with 3-6 have been compared with the reference compounds CpTiCl(3) (1), Cp*TiCl3 (2), and Cp(2)TiCl(2) (7), and are consistent with Ti-N Lewis acid-base interaction.
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页码:8030 / 8035
页数:6
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