O. Daugulis, M. Brookhart, P. White
Oct 15, 2003
Citations
0
Influential Citations
26
Citations
Journal
Organometallics
Abstract
Tetramethyl(2-methylthioethyl)cyclopentadiene complexes of cobalt have been synthesized and tested in ethylene polymerization. In combination with MMAO-3A, tetramethyl(2-methylthioethyl)cyclopentadienylcobalt diiodide (4) was shown to polymerize ethylene to linear polyethylene with Mn's in the range of 5000−68 000. The activity of the catalyst is improved compared to the previously described catalysts containing the Cp*Co+(PR3) unit. Cationic (tetramethyl(2-methylthioethyl)cyclopentadienyl)methylcobalt nitrile complexes 8 were also shown to be competent ethylene polymerization catalysts, producing polyethylene with similar properties as observed with 4/MMAO-3A.