Proceedings of the Polymer Society of Korea Conference (한국고분자학회:학술대회논문집)

The Polymer Society of Korea (한국고분자학회)
권호 표지

Bifunctional Perfluoroaryl Boranes as Cationic Initiators for Isobutylene Polymerization

  • Piers Warren E. (Department of Chemistry, University of Calgary) ;
  • Chase Preston A. (Department of Chemistry, University of Calgary) ;
  • Henderson Lee, D. (Department of Chemistry, University of Calgary) ;
  • Sciarone Timo (Department of Chemistry, University of Calgary) ;
  • Collins Scott (Department of Polymer Science, University of Akron) ;
  • Chai, Jianfang (Department of Polymer Science, University of Akron) ;
  • Parvez Masood (Department of Chemistry, University of Calgary)
  • Published : 2006.10.13
Download PDF
⟨ Previous Next ⟩

Abstract

Perfluoroaryl boranes are widely employed as co-catalysts in olefin polymerization processes. Perfluoroaryl diboranes, possessing borane centers in close proximity, are a subclass of this family of compounds that are in theory capable of chelating neutral and anionic bases. The resulting anions are exceptionally weakly coordinating. We have prepared examples of such compounds and studied their coordination behavior with neutral Lewis bases that have the capability to bridge Lewis acid sites in an effort to delineate the kinetic and thermodynamic factors that influence bonding mode. When protic Lewis bases such as alcohols or water are reacted with diboranes, strong Bronsted acids capable of initiating cationic polymerizations under unusual conditions result.

Keywords