Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 260, Issue 1-2, Pages 215-220Publisher
ELSEVIER
DOI: 10.1016/j.molcata.2006.07.010
Keywords
tridentate ligands; bis(imino)pyrazine; ethylene polymerization; iron complexes; ethene-hexene copolymerization
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A series of new iron(II) complexes bearing tridentate pyrazine-bis(2,6-arylimino) ligands where the aryl groups are 1-naphthyl, 2,6-dimethylphenyl, and 2,6-diisopropylphenyl have been used as ethylene polymerization catalysts after activation with alkylaluminiums. The new complexes display a lesser catalytic activity than those bearing the corresponding pyridine-bis(2,6-arylimino) ligands. Varying the steric bulkiness of the aromatic groups in the tridentate ligands and the polymerization conditions affects the catalytic productivity. (c) 2006 Elsevier B.V. All rights reserved.
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