Investigating the nature of the active species in bis(imino)pyridine cobalt ethylene polymerization catalysts

Igor E. Soshnikov, Nina V. Semikolenova, Alexey N. Bushmelev, Konstantin P. Bryliakov, Oleg Y. Lyakin, Carl Redshaw, Vladimir A. Zakharov, Evgenii P. Talsi

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    Abstract

    The activation of bis(imino)pyridine cobalt-based catalysts of ethylene polymerization with methylalumoxane (MAO), AlMe3, and AlMe3/[CPh3][B(C6F5)4] has been studied by 1H, 2H, and 19F NMR and EPR spectroscopy. The nature of the active sites of polymerization is discussed. The polymerization kinetics and the polymer properties for the different catalyst/activator systems were correlated with spectroscopic data.
    Original languageEnglish
    Pages (from-to)6003-6013
    Number of pages11
    JournalOrganometallics
    Volume28
    Issue number20
    Early online date23 Sept 2009
    DOIs
    Publication statusPublished - 2009

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