Synthesis, Structures, and Norbornene Polymerization Behavior of Bis(aryloxide-N-heterocyclic carbene) Nickel Complexes

被引：45

作者：

Kong, Yong ^{[1
]}

Cheng, Man ^{[2
]}

Ren, Hongping ^{[1
]}

Xu, Shansheng ^{[1
]}

Song, Haibin ^{[1
]}

Yang, Min ^{[2
]}

Liu, Binyuan ^{[2
]}

Wang, Baiquan ^{[1
]}

机构：

[1] Nankai Univ, Coll Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China

[2] Hebei Univ Technol, Inst Polymer Sci & Engn, Tianjin 300130, Peoples R China

来源：

ORGANOMETALLICS | 2011年 / 30卷 / 06期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

N-HETEROCYCLIC CARBENE; CATALYTIC EMULSION POLYMERIZATION; AB-INITIO POLYMERIZATION; TRANSITION-METAL-COMPLEXES; OLEFIN POLYMERIZATION; PALLADIUM COMPLEXES; NEUTRAL NICKEL; ARYL CHLORIDES; ETHYLENE POLYMERIZATION; VINYL POLYMERIZATION;

D O I：

10.1021/om1011825

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of the o-hydroxyaryl imidazolinium proligands (2-OH-3,5-(Bu2C6H2)-Bu-t)(R)(C3H3N2)Br-+(-) [R = Pr-i (1a), Bu-t (1b), Ph (1c), Mes (1d)] with NiL2Cl2 (L = PPh3, Py) or Ni(OAc)(2)center dot 4H(2)O afforded the corresponding cis bis(aryloxide-NHC) nickel complexes 2-5. Notably, the products were independent from the pro-ligands/Ni ratios. The same complexes were obtained with the pro-ligands/Ni ratio of 1:1 or 2:1. All the complexes were characterized by H-1 and C-13 NMR, high-resolution mass spectrometry (HRMS), and elemental analysis. The molecular structures of the aryloxide-NHC-ligated nickel complexes 2-5 were determined by single-crystal X-ray diffraction analysis. With methylaluminoxane (MAO) as cocatalyst, the nickel complexes showed moderate catalytic activities (10(6) g of PNB (mol of Ni)(-1) h(-1)) in the addition polymerization of norbomene.

引用

页码：1677 / 1681

页数：5

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