Abstract
Abstract A series of iron complexes containing 2-imino-1,10-phenanthrolinyl ligands, LFeCl2 (L=2-(ArN=CR)-1,10-phen), have been synthesized and sufficiently characterized by elemental and spectroscopic analysis as well as by X-ray diffraction analysis. Upon activation with methylaluminoxane (MAO), these iron(H) complexes showed high catalytic activities [up to 4.91 × 107 g mol- 1(Fe) h- 1] for ethylene oligomerization. The distribution of oligomers produced follows Schluz-Flory rule with high selectivity of α-olefins. Both the steric and electronic effects of coordinative ligands affect the catalytic activity and the properties of the resultant products. The parameters of the reaction conditions were also investigated to explore the catalytic potentials of these complexes.
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