2-[1-(2,6-Dibenzhydryl-4-methylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridylnickel(II) halides: Synthesis, characterization and ethylene oligomerization behavior

Lai, Jingjuan, Hou, Xiaohua, Liu, Yongwen, Redshaw, Carl and Sun, Wen-Hua (2012) 2-[1-(2,6-Dibenzhydryl-4-methylphenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridylnickel(II) halides: Synthesis, characterization and ethylene oligomerization behavior. Journal of Organometallic Chemistry, 702. pp. 52-58.

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Abstract

A series of nickel(II) halide complexes ligated by 2-[1-(2,6-dibenzhydryl-4-methyl-phenylimino)ethyl]-6-[1-(arylimino)-ethyl]pyridines was synthesized and characterized by FT–IR spectroscopy and elemental analysis. Single-crystal X-ray crystallographic studies revealed that the nickel halide complexes possess pseudo square-pyramidal geometry at nickel. Following screening with the co-catalysts Et2AlCl, MAO, MMAO and ethylaluminum sesquichloride (EASC, Et3Al2Cl3), EASC was chosen as the co-catalyst of choice, and activities as high as 2.5 × 106 g mol-1 (Ni) h-1 were observed for ethylene oligomerization. The influence of the ligands and of the reaction parameters on the catalytic behavior of the nickel pre-catalysts was investigated.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rhiannon Harvey
Date Deposited: 21 Mar 2012 11:14
Last Modified: 17 Mar 2020 14:29
URI: https://ueaeprints.uea.ac.uk/id/eprint/38377
DOI: 10.1016/j.jorganchem.2011.12.031

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