Reactivity of group 4 benzamidinate complexes towards mono- and bis-substituted silanes and 1,5-hexadiene

Victoria Volkis, Claudia Averbuj, Moris S. Eisen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Zirconium and titanium bis(benzamidinate) dimethyl complexes were found to be active catalytic precursors for the oligomerization of mono- and bis-substituted silanes. The activation of such complexes, by an excess of MAO or by an equimolar amount of B(C6F5)3, increases the catalytic activity of the complexes and the molecular weight of the obtained oligosilanes. The maximum polymerization index that was accomplished (n = 90) is by far the largest obtained with other organometallic complexes. In addition, the activated benzamidinate catalysts were also found to be active for the polymerization of 1,5-hexadiene producing poly(methyl-1,3-cyclopentane). For the latter, the results obtained with C2-symmetry bis(benzamidinate) dimethyl complexes were compared with a chiral complex bearing a myrtanyl group at the benzamidinate ligand.

Original languageEnglish
Pages (from-to)1940-1950
Number of pages11
JournalJournal of Organometallic Chemistry
Volume692
Issue number10
DOIs
StatePublished - 15 Apr 2007
Externally publishedYes

Keywords

  • Benzamidinate complexes
  • Chiral complexes
  • Dehydrogenative coupling of silanes
  • Polymethylcyclopentane
  • Polysilanes

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