Synthesis, characterization and ethylene polymerization behavior of nickel dihalide complexes bearing bulky unsymmetrical α-diimine ligands

Hao Liu, Weizhen Zhao, Jiangang Yu, Wenhong Yang, Xiang Hao, Carl Redshaw, Langqiu Chen, Wen-Hua Sun

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Abstract

A series of nickel(II) dihalide complexes (C1–C10) bearing unsymmetrical a-diimine ligands of the type 2,4-dibenzhydryl-N-(2-phenyliminoacenaphthylenylidene)-6-methylbenzenamine (L1–L5) were synthesized and fully characterized. Single-crystal X-ray diffraction revealed a distorted tetrahedral geometry around the nickel center in the complexes C3, C5 and C9. Upon activation with modified methylaluminoxane (MMAO), all nickel pro-catalysts performed with high activities in ethylene polymerization, producing highly branched polyethylene products
Original languageEnglish
Pages (from-to)415-422
Number of pages8
JournalCatalysis Science & Technology
Volume2
Issue number2
DOIs
Publication statusPublished - 2012

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