title: The nature of the active species in bis(imino)pyridyl cobalt ethylene polymerisation catalysts.
abstract: Studies on cobalt ethylene polymerisation catalysts bearing bis(imino)pyridine ligands strongly indicate that the activated species is not the anticipated cobalt(II) alkyl cation.
authors.affiliation: Department of Chemistry, Imperical College of Science, Technology and Medicine, Exhibition Road, South Kensington, London SW7 2AY, UK.
authors.forename: V C
authors.initials: VC
authors.lastname: Gibson
authors.forename: M J
authors.initials: MJ
authors.lastname: Humphries
authors.forename: K P
authors.initials: KP
authors.lastname: Tellmann
authors.forename: D F
authors.initials: DF
authors.lastname: Wass
authors.forename: A J
authors.initials: AJ
authors.lastname: White
authors.forename: D J
authors.initials: DJ
authors.lastname: Williams