Surface organometallic chemistry: A route to well-defined boron heterogeneous co-catalyst for olefin polymerisation

Nicolas Millot, Catherine C. Santini*, Frédéric Lefebvre, Jean-Marie Maurice Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The reaction of tris(pentafluorophenyl)borane, B(C6F5)3 with surface silanol (≡Si-OH) of silica occurs only in the presence of a Brønsted base (diethylaniline, Et2NPh), which does not form a complex with B(C6F5)3, and affords selectively a well-defined ionic entity [≡SiO-B(C6F5)3]- [HNEt2Ph]+. With a strong nucleophile base such as pyridine (C5H5N), the complex (C6F5)3B.NC5H5 is formed and is only physisorbed onto silica surface. Without a base, B(C6F5)3 does not react with (≡Si-OH), and is only physisorbed. On the contrary, with any molecular compound ROH, B(C6F5)3 forms a stable complex (C6F5)3ḂO(H)R.

Original languageEnglish (US)
Pages (from-to)725-736
Number of pages12
JournalComptes Rendus Chimie
Volume7
Issue number8-9
DOIs
StatePublished - Aug 1 2004

Keywords

  • Diethylaniline
  • Heterogeneous anions
  • Polymerisation co-catalyst
  • Silica
  • Tris(pentafluorophenyl)borane

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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