Titanium and zirconium complexes with the new ancillary diamido ligand N,N′-bis(trimethylsilyl)amidobenzylamido(2-):: Syntheses, structures, and α-olefin polymerization activities

被引：36

作者：

Jeon, YM

Heo, J

Lee, WM

Chang, TH

Kim, K

机构：

[1] Pohang Univ Sci & Technol, Dept Chem, Pohang, South Korea

[2] Pohang Univ Sci & Technol, Natl Creat Res Initiat Ctr Smart Supramol, Pohang, South Korea

来源：

ORGANOMETALLICS | 1999年 / 18卷 / 20期

关键词：

D O I：

10.1021/om990121b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Using the disymmetric N,N'-bis(trimethylsilyl)aminobenzylamine (H(2)MABA; 1) ligand, the new group 4 metal complexes (MABA)TiCl2 (2), (MABA)TiMe2 (3), (MABA)Ti(CH2Ph)(2) (4), (MABA)ZrCl2 (5), and (MABA)(2)Zr (6) were prepared. X-ray crystal structures of 2, 4, and 6 were determined. The crystal structure of 2 suggests that an agostic interaction between the titanium metal center and benzylic protons exists in the solid state. However, the agostic interaction is not sustained in solution, as indicated by NMR spectroscopy. Complexes 2 and 5, activated by MMAO, and 4, activated by B(C6F5)(3), have moderate catalytic activities for the polymerization of alpha-olefins.

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页码：4107 / 4113

页数：7

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