Citation: Qi-song Shi, Xiang Hao, Carl Redshaw, Wen-hua Sun. HALONICKEL 2,4-DI-t-BUTYL-6-(QUINOLIN-8-YLIMINOMETHYL)PHENOLATES: SYNTHESIS, CHARACTERIZATION AND ETHYLENE REACTIVITY[J]. Chinese Journal of Polymer Science, ;2013, 31(5): 769-777. doi: 10.1007/s10118-013-1266-z shu

HALONICKEL 2,4-DI-t-BUTYL-6-(QUINOLIN-8-YLIMINOMETHYL)PHENOLATES: SYNTHESIS, CHARACTERIZATION AND ETHYLENE REACTIVITY

Received Date: 14 December 2012
Revised Date: 14 January 2013

Fund Project: This work was financially supported by NSFC (No. 20911130359).

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.
- Nickel,
- 2,4-Di-t-butyl-6-(quinolin-8-yliminomethyl)-phenolates,
- Ethylene oligomerization,
- Polymerization
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