Abstract
Synthesis and investigations of Nickel-based olefin oligomerization and polymerization catalysts, ?-Iminocarboxyamide µ3-Penzyl Ni(II) Complex(2) is reported. The attempt to improve the yield of the synthesis of the above mentioned catalysts by the direct reaction of the potassium salt of the ligand, Ni(COD)2(bis(1,5-cyclooctadiene)-nickel, and Benzyl halide in THF and starting temperature of -35°C. Led instead to disclose that the less hindered N-aryal moieties on the diimine complexes the more difficult to synthesize the ethylene polymerization catalyst, Instead, yielding the di ? -Iminocarboxyamide Ni-complex(5) which is inactive towards ethylene polymerization. This promoted us to synthesize the complex di ?-Iminocarboxyamide Zr-complex(6) which is activated by MAO for ethylene polymerization.
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