Isobutene Polymerization Using [CuII(NCMe)6]2+ with Non-Coordinating Anions as Catalysts

Authors

  • Ahmed K. Hijazi,

    1. Department für Chemie der Technischen, Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
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  • Hui Y. Yeong,

    1. Lehrstuhl für Makromolekulare Stoffe der Technischen Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
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  • Yanmei Zhang,

    1. Department für Chemie der Technischen, Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
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  • Eberhardt Herdtweck,

    1. Department für Chemie der Technischen, Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
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  • Oskar Nuyken,

    Corresponding author
    1. Lehrstuhl für Makromolekulare Stoffe der Technischen Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
    • Department für Chemie der Technischen, Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany. Fax: +49 (0)89 289 13474
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  • Fritz E. Kühn

    Corresponding author
    1. Department für Chemie der Technischen, Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
    2. Department of Chemistry, Instituto Tecnológico e Nuclear (ITN), Estrada Nacional No. 10, 2686-953 Sacavém, Portugal. Fax: 00351219550117
    • Lehrstuhl für Makromolekulare Stoffe der Technischen Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany. Fax: +49 (0)89 289 13563
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Abstract

CuII compounds coordinated octahedrally with nitriles and associated with bulky, non-coordinating counter ions can be applied in the polymerization of isobutene at 30 °C. High yields and a high content of terminal double bonds are reached in the resulting highly reactive polyisobutylenes, while the molecular masses are moderate. Two of the coordinating nitriles are more weakly coordinated than the other four, as can be concluded from an exemplary X-ray structure and from vibrational spectra, thus providing easily accessible sites for substrate coordination.

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