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Single Site Polymerizations of Ethylene and 1-Olefins Catalyzed by Rare Earth Metal Complexes

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New Macromolecular Architecture and Functions

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Abstract

The catalytic activities of a series of metallocene lanthanide(II) complexes such as racemic Me2Si(2-SiMe3-4-tBu-C5H2)2Sm(THF)2, meso type Me2Si(Me2SiOSiMe2)(C5H2-tBu)Sm(THF)2 and C1 symmetric Me2Si[2,4(SiMe3)2C5H2][3,4-(SiMe3)2C5H2]Sm(THF)2 were examined for polymerization of ethylene and 1-olefins. As a consequence, catalytic activity for polymerization of ethylene increases in the order of meso > racemic > C1 symmetric complex. Only the racemic complex exhibits good catalytic activity for polymerization of 1-olefins. The catalysis of lanthanide(III) metallocenes was also explored by using racemic Me2Si[2,4-(SiMe3)2C5H2]2SmCH(SiMe3)2 and C1 symmetric Me2Si[2,4-(SiMe3)2C5H2][3,4-(SiMe3)2C5H2]SmCH(SiMe3)2, and the C1 symmetric complex was found to exhibit good catalytic activity for polymerization of ethylene and 1-olefins while the racemic complex is inert towards the polymerization of ethylene and 1-olefins.

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Author information

Authors and Affiliations

  1. Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima, 739, Japan

    Eiji Ihara & Hajime Yasuda

Authors
  1. Eiji Ihara
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  2. Hajime Yasuda
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Editor information

Editors and Affiliations

  1. Dept. of Macromolecular Science, Osaka University, 560, Toyonaka, Osaka, Japan

    Mikiharu Kamachi  & Akira Nakamura  & 

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© 1996 Springer-Verlag Berlin Heidelberg

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Ihara, E., Yasuda, H. (1996). Single Site Polymerizations of Ethylene and 1-Olefins Catalyzed by Rare Earth Metal Complexes. In: Kamachi, M., Nakamura, A. (eds) New Macromolecular Architecture and Functions. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-80289-8_5

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  • DOI: https://doi.org/10.1007/978-3-642-80289-8_5

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-80291-1

  • Online ISBN: 978-3-642-80289-8

  • eBook Packages: Springer Book Archive

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