Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 694, Issue 23, Pages 3701-3707Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2009.07.039
Keywords
Chromium(III) complex; 2-Benzoxazolyl-6-aryliminopyridine; Ethylene oligomerization; Ethylene polymerization
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Funding
- NSFC [20674089]
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A series of chromium(III) complexes bearing 2-benzoxazolyl-6-aryliminopyridines was synthesized and characterized by IR spectroscopic and CHN analysis. The X-ray crystallographic analysis of complex Cr3 revealed a distorted octahedral geometry. When activated by Et2AlCl, MAO or MMAO, these chromium complexes exhibited activities towards ethylene reactivity. High activities of ethylene oligomerization (up to 9.19 x 10(6) g mol(-1) (Cr) h(-1)) were observed in the catalytic system using MMAO as a cocatalyst, meanwhile good activities of ethylene polymerization were achieved (up to 5.20 x 10(5) g mol(-1) (Cr) h(-1)) by using MAO as a cocatalyst. Various reaction parameters were investigated in detail, and the steric and electronic effects of ligands were discussed. (C) 2009 Elsevier B.V. All rights reserved.
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