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A 13C-NMR study of the microstructure of polyphenylacetylenes prepared with MoCl5 and WCl6

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Summary

The microstructure of polyphenylacetylenes prepared with MoCl5 and WCl6 catalysts in several solvents was studied by 13C-NMR spectroscopy. Use of 13{1H} INEPT (insensitive nuclei enhanced by polarization transfer) experiment aids the resonance assignments of cis, trans and cyclohexadiene structural units. The NMR spectral data confirm our previous findings regarding the roles of isomerization prior to double bond formation and thermal isomerization after double bond formation in the mechanism responsible for the control of polymer microstructure and molecular weight.

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Authors and Affiliations

  1. Department of Macromolecular Science, Case Western Reserve University, 44106, Cleveland, OH, USA

    Virgil Percéc

  2. Department of Chemistry, Case Western Reserve University, 44106, Cleveland, OH, USA

    Peter L. Rinaldi

Authors
  1. Virgil Percéc
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  2. Peter L. Rinaldi
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Percéc, V., Rinaldi, P.L. A 13C-NMR study of the microstructure of polyphenylacetylenes prepared with MoCl5 and WCl6 . Polymer Bulletin 9, 548–555 (1983). https://doi.org/10.1007/BF00265243

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  • DOI: https://doi.org/10.1007/BF00265243

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