Isoselective living polymerization of 1-hexene catalyzed by half-metallocene dimethyl complexes of hafnium with bidentate N-substituted (iminomethyl)pyrrolyl ligands

被引：49

作者：

Yasumoto, T ^{[1
]}

Yamagata, T ^{[1
]}

Mashima, K ^{[1
]}

机构：

[1] Osaka Univ, Dept Chem, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

来源：

ORGANOMETALLICS | 2005年 / 24卷 / 14期

关键词：

D O I：

10.1021/om050108t

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The nonbridged half-metallocene dimethyl-hafnium complexes 3a-c with N-substituted (iminomethyl)pyrrolyl ligands 2a-c have been synthesized and characterized by NMR spectroscopy as well as X-ray analyses for 3ab. These complexes were found to be active catalysts for the isoselective living polymerization of 1-hexene upon treatment with [Ph3C][B(C6F)(4)] below 0 degrees C.

引用

页码：3375 / 3377

页数：3

共 7 条

[1] Isospecific polymerization of 1-hexene by C1-symmetric half-metallocene dimethyl complexes of group 4 metals with bidentate N-substituted iminomethylpyrrolyl ligands
Yasumoto, Takahiro
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DALTON TRANSACTIONS, 2013, 42 (25) : 9120 - 9128
[2] Aluminum alkyl complexes containing bidentate, mono- or di-anionic pyrrolyl ligands: Intramolecular elimination of methane and 1-hexene polymerization
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[3] A new post-metallocene catalyst for alkene polymerization: copolymerization of ethylene and 1-hexene with titanium complexes bearing N,N-dialkylcarbamato ligands
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[4] Binuclear zirconium complexes with bidentate N-(ortho-dimethylaminobenzyl)anilide ligands: Synthesis, characterization, and catalytic properties for ethylene polymerization and copolymerization with 1-hexene
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[5] Synthesis, structures, and catalytic efficiency in ring opening polymerization of rac-lactide with tridentate vs. bidentate cobalt(ii), zinc(ii), and cadmium(ii) complexes containing N-substituted N,N-bis((3,5-dimethyl-1H-pyrazol-1-yl)methyl)amine ligands
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[6] Living polymerization of 1-hexene by cationic zirconium and hafnium complexes that contain a diamido/donor ligand of the type [H3CC(2-C5H4N)(CH2Nmesityl)2]2-.: A comparison of methyl and isobutyl initiators
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ORGANOMETALLICS, 2003, 22 (22) : 4569 - 4583
[7] Zirconium and hafnium complexes that contain the electron-withdrawing diamido/donor ligands [(2,6-X2C6H3NCH2)2C(2-C5H4N)(CH3)]2- (X = Cl or F).: An evaluation of the role of ortho halides in 1-hexene polymerization
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