A Possible Model for the Stereospecificity in the Syndiospecific Polymerization of Propene with Group 4A Metallocenes

Luigi Cavallo, Gaetano Guerra*, Michele Vacatello, Paolo Corradini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

141 Scopus citations

Abstract

The techniques of conformational analysis to investigate the factors that determine the stereospecificity, previously applied to stereorigid model sites for the homogeneous isospecific Ziegler-Natta catalysis, are now extended to other stereorigid cationic model sites. For a model site including an isopropyl-(cyclopentadienyl-1-fluorenyl) ligand, a precise definition of the interactions that determine its enantiose-lectivity at the molecular level is presented. For other model sites including an isopropyl(cyclopentadienyl-1-indenyl) or an isopropyl(l-fluorenyl-3-methylcyclopentadienyl) ligand, on the basis of energy calculations, predictions of their stereospecific behavior are presented, which are in a qualitative agreement with the available experimental information.

Original languageEnglish (US)
Pages (from-to)1784-1790
Number of pages7
JournalMacromolecules
Volume24
Issue number8
DOIs
StatePublished - Apr 1 1991

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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