Molecular heterogeneous metathesis catalysts: An attempted synthesis of surface-anchored alkylidenetungsten complexes

Regina Buffon, Michel Leconte, Agnès Choplin*, Jean Marie Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The reactivity of the two alkylidynetungsten complexes, [W(≡CCMe3)(CH2CMe3)3] and [W(≡CCMe3)Cl3(dme)] (dme = 1,2-dimethoxyethane), was determined with the surface of different inorganic oxides, such as silica, alumina, silica-alumina and niobia; their catalytic activity was tested for the metathesis of cis-pent-2-ene. The most efficient solids resulted from the interaction of these complexes with the surface of partially dehydroxylated niobia and silica-alumina. An attempt to identify the surface complexes on niobia (most active system) and silica (less active system) revealed the presence of a number of different anchored complexes, some of them bearing a neopentylidene ligand. The possible correlation between catalytic activity and some of the most probable surface entities is discussed.

Original languageEnglish (US)
Pages (from-to)1723-1729
Number of pages7
JournalJournal of the Chemical Society, Dalton Transactions
Issue number12
DOIs
StatePublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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