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2,6-Dibenzhydryl-N-(2-phenyliminoacenaphthylenylidene)-4-methylbenzenamine Nickel Dibromides: Synthesis, Characterization, and Ethylene Polymerization

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journal contribution
posted on 25.04.2011, 00:00 by Hao Liu, Weizhen Zhao, Xiang Hao, Carl Redshaw, Wei Huang, Wen-Hua Sun
A series of 2,6-dibenzhydryl-N-(2-phenyliminoacenaphthylenylidene)-4-methylbenzenamines (L1L5) and the nickel(II) dibromide complexes thereof (C1C5) were synthesized and fully characterized. The molecular structures of representative complexes were determined by single-crystal X-ray diffraction and revealed a distorted-pyramidal geometry at nickel. All nickel(II) procatalysts exhibited very high activity for the polymerization of ethylene, with activities as high as the range of 107 g of PE (mol of Ni)−1 h−1.