Zirconium-allyl complexes as resting states in zirconocene-catalyzed α-olefin polymerization

Macromol Rapid Commun. 2015 Jan;36(2):249-53. doi: 10.1002/marc.201400444. Epub 2014 Oct 30.

Abstract

UV-vis spectroscopic data indicate that zirconocene cations with Zr-bound allylic chain ends are generally formed during olefin polymerization with zirconocene catalysts. The rates and extent of their formation and of their re-conversion to the initial pre-catalyst cations depend on the types of zirconocene complexes and activators used.

Keywords: allyl complexes; catalysis; metallocene catalysts; olefin polymerization; resting states.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes / chemistry*
  • Catalysis
  • Organometallic Compounds / chemistry*
  • Polymerization*
  • Polymers / chemical synthesis
  • Polymers / chemistry
  • Spectrometry, Fluorescence
  • Zirconium / chemistry*

Substances

  • Alkenes
  • Organometallic Compounds
  • Polymers
  • Zirconocene dichloride
  • propylene
  • 1-hexene
  • Zirconium