Bridged boratabenzene zirconium complexes: Analogues of the ansa-zirconocene polymerization catalysts

被引:47
作者
Ashe, AJ [1 ]
Al-Ahmad, S [1 ]
Fang, XG [1 ]
Kampf, JW [1 ]
机构
[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA
关键词
D O I
10.1021/om9802764
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Ethylene-bridged bis(N,N-diisopropyl-1-aminoboratabenzene-4-yl)zirconium dichloride (5a), dimethylsilyl-bridged bis(N,N-diisopropyl-1-aminoboratabenzene-4-yl)zirconium dichloride (7a), and dimethylmethylene-bridged (cyclopentadienyl)(N,N-diisopropyl-1-aminoboratabenzene-4-yl)zirconium dichloride (6a) have been prepared. X-ray crystal structures of the dimethyl derivatives of 5 and 7 show that the complexes closely resemble the corresponding ansa-zirconocenes. When activated by excess methylaluminoxane, 5a, ga, and 7a are catalysts for the polymerization of olefins.
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页码:3883 / 3888
页数:6
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