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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Ethylene polymerization by the thermally unique 1-2-(bis(4-fluoro phenyl)methyl)-4,6-dimethylphenylimino-2-aryliminoacenaphthylnickel precursors
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Ethylene polymerization by the thermally unique 1-2-(bis(4-fluoro phenyl)methyl)-4,6-dimethylphenylimino-2-aryliminoacenaphthylnickel precursors

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摘要

A series of 1-2-(bis(4-fluorophenyl)methyl)-4,6-dimethylphenylimino-2-aryliminoacenaphthylene derivatives together with the corresponding nickel bromide complexes was synthesized and characterized. Representative complexes C2 and C5 were characterized by the single-crystal X-ray diffraction, revealing a distorted tetrahedral geometry. Upon activation with either methylaluminoxane (MAO) or ethylaluminum sesquichloride (EASC), all nickel complexes exhibited high activities towards ethylene polymerization, producing polyethylene with a relatively low degree of branching and narrow polydispersity. Complex C1 maintained good activity at elevated reaction temperatures, which indicates significant thermal stability of the active species.

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