Abstract
The preparation and characterization of the substituted bis(cyclopentadienyl) zirconium dichloride complexes ( η 5-C 5H 4CMe 2C 9H 7) 2ZrCl 2 ( 1a, b) is reported. The isomer mixture of 1a, b was treated with different reducing agents such as sodium and n-butyllithium under various reaction conditions. In these reactions CC and CH activation and cleavage reactions were observed. In combination with methylaluminoxane (MAO) 1a, b and 3 showed low activities as homogeneous ethylene polymerization catalysts and no activities towards propylene. Compounds 2 and 3 were characterized by NMR spectroscopy and X-ray crystallography.
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