|
|||||
|
|
Halonickel 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl)phenolates: Synthesis, characterization and ethylene reactivity |
|
| Authors: | Qi-song Shi Xiang Hao Carl Redshaw Wen-hua Sun |
| Institution: | 1. College of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry,Chinese Academy of Sciences, Beijing 100190, China 2. Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry,Chinese Academy of Sciences, Beijing 100190, China 3. Department of Chemistry, University of Hull, Hull HU6 7RX,, UK |
| Abstract: | A series of nickel halides bearing 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl) phenolate ligands was synthesized and characterized by IR spectroscopy and elemental analysis. Molecular structures of C1 (R = H, X = Br) and C2 (R = H, X = Cl) were further confirmed by single-crystal X-ray crystallographic studies, and revealed a distorted square planar geometry at nickel. Upon activation with diethylaluminum chloride (Et2AlCl), all nickel pre-catalysts displayed good catalytic activity up to 9.3 × 105 g mol?1 (Ni) h?1] for ethylene oligomerization with major dimerization. In the presence of methylaluminoxane (MAO), the nickel complex C1 was capable of ethylene polymerization under 3 MPa, and produced polyethylene products with narrow polydispersity (1.16–1.73) and molecular weights in the range of 2.6–4.95 kg/mol. |
| Keywords: | Nickel 2 4-Di-t-butyl-6-(quinolin-8-yliminomethyl)-phenolates Ethylene oligomerization Polymerization |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ | |