Nuclearity and cooperativity effects in binuclear catalysts and cocatalysts for olefin polymerization

Hongbo Li, Tobin J Marks

Research output: Contribution to journalArticle

183 Citations (Scopus)

Abstract

A series of bimetallic organo-group 4 "constrained geometry" catalysts and binuclear bisborane and bisborate cocatalysts have been synthesized to probe catalyst center-catalyst center cooperativity effects on olefin enchainment in homogenous olefin polymerization and copolymerization processes. Significant nuclearity effects are found versus mononuclear controls, and the effect can be correlated with metal-metal approach distances and ion pairing effects. Novel polymer structures can be obtained by using such binuclear catalyst/cocatalyst systems.

Original languageEnglish
Pages (from-to)15295-15302
Number of pages8
JournalProceedings of the National Academy of Sciences of the United States of America
Volume103
Issue number42
DOIs
Publication statusPublished - Oct 17 2006

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Alkenes
Polymerization
Metals
Polymers
Ions

Keywords

  • Catalysis
  • Polymer
  • Polyolefin

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

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AB - A series of bimetallic organo-group 4 "constrained geometry" catalysts and binuclear bisborane and bisborate cocatalysts have been synthesized to probe catalyst center-catalyst center cooperativity effects on olefin enchainment in homogenous olefin polymerization and copolymerization processes. Significant nuclearity effects are found versus mononuclear controls, and the effect can be correlated with metal-metal approach distances and ion pairing effects. Novel polymer structures can be obtained by using such binuclear catalyst/cocatalyst systems.

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