, Volume 6, Issue 4, pp 247–255 | Cite as

1 H and 29Si NMR Spectroscopy as a Powerful Analytical Tool to Evaluate the Activity of Various Platinum-Based Catalysts in Model Olefin Hydrosilylation

  • Valérie MeilleEmail author
  • Marie-Line Zanota
  • Fernande Da Cruz-Boisson
  • Cécile Chamignon
  • Sébastien Marrot
Original Paper


The structure of polysiloxane copolymers obtained by hydrosilylation of 1-octene with polymethylhydrosiloxane (PMHS) was analyzed by 29Si NMR spectroscopy and revealed a tendency to form block copolymers. Although all the platinum catalysts that were used showed a tendency to form some block structures, only Karstedt catalyst led to well defined block copolymers. However, the tacticity of these copolymers could not be determined using Heteronuclear Multiple Bond Correlation (HMBC) 2D (1H/ 29Si) NMR technique. The following criteria were found to affect the structure of the hydrosilylation product: low SiH conversion, the “age” of the Karstedt catalyst (low TON) and high octene/SiH ratios.


Microstructure PMHS Hydrosilylation 29Si NMR Neighboring effect Tacticity 


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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Valérie Meille
    • 1
    Email author
  • Marie-Line Zanota
    • 1
  • Fernande Da Cruz-Boisson
    • 2
  • Cécile Chamignon
    • 3
  • Sébastien Marrot
    • 4
  1. 1.Laboratoire de Génie des Procédés Catalytiques UMR 5285 CNRS, CPE Lyon, Institut de Chimie de LyonUniversité de LyonVilleurbanne cedexFrance
  2. 2.CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Service RMN Polymères, INSA de Lyon, Institut de Chimie de LyonVilleurbanneFrance
  3. 3.CNRS, FR 3023, Service RMN Polymères, Institut de Chimie de LyonVilleurbanneFrance
  4. 4.Bluestar Silicones FranceSaint-FonsFrance

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