Well-defined surface tungstenocarbyne complexes through the reaction of [W(≡CtBu)(CH2tBu)3] with silica

Erwan Le Roux, Mostafa Taoufik, Mathieu Chabanas, Damien Alcor, Anne Baudouin, Christophe Copéret, Jean Thivolle-Cazat, Jean Marie Basset*, Anne Lesage, Sabine Hediger, Lyndon Emsley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


The molecular complex [W(≡CtBu)(CH2tBu)3], 1, reacts with SiO2-(700) to give as major species 2a, [(≡SiO)W(≡CtBu)(CH2tBu)2], while a bisgrafted surface species 3a, [(≡SiO)2W (≡CtBu)(CH 2tBu)], is obtained on SiO2-(200). As in molecular organometallic chemistry, the alkylalkylidyne tautomeric form is favored. Despite these structural features, these surface organometallic complexes are very active olefin metathesis catalysts, as reported earlier, and it is very likely that the necessary metallocarbene intermediates are generated under the reaction conditions.

Original languageEnglish (US)
Pages (from-to)4274-4279
Number of pages6
Issue number17
StatePublished - Aug 15 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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