Generation of bis(iminoalkyl)pyridine cobalt(i) cations under metal alkyl free conditions that polymerize ethene
- 14 April 2004
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 10,p. 1188-1189
- https://doi.org/10.1039/b401122h
Abstract
Treatment of the bis(iminoethyl)- or bis(iminobenzyl)pyridine cobalt dichlorides 3a,b with ″butadiene-magnesium″ (a, R = CH3) or methyllithium (b, R = Ph) yields the corresponding bis(iminoalkyl)pyridine cobalt(I) chloride complexes 7a,b. Chloride abstraction with Li[B(C6F5)4] in toluene generates the corresponding cations (9) which are low activity catalysts for the polymerization of ethene. The pyridine-stabilized [bis(iminoethyl)pyridineCo(I)(NC5H5)+] [B(C6F5)4 −] salt was characterized by X-ray diffraction.Keywords
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