WMe6 tamed by silica: Si-O-WMe5 as an efficient, well-defined species for alkane metathesis, leading to the observation of a supported W-methyl/methylidyne species

Manoja Samantaray, Emmanuel Callens, Edy Abou-Hamad, Aaron J. Rossini, Cory M. Widdifield, Raju Dey, Lyndon Emsley, Jean-Marie Basset

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

The synthesis and full characterization of a well-defined silica-supported ≡Si-O-W(Me)5 species is reported. Under an inert atmosphere, it is a stable material at moderate temperature, whereas the homoleptic parent complex decomposes above -20 °C, demonstrating the stabilizing effect of immobilization of the molecular complex. Above 70 °C the grafted complex converts into the two methylidyne surface complexes [(≡SiO-)W(≡CH) Me2] and [(≡SiO-)2W(≡CH)Me]. All of these silica-supported complexes are active precursors for propane metathesis reactions. © 2013 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)1054-1061
Number of pages8
JournalJournal of the American Chemical Society
Volume136
Issue number3
DOIs
StatePublished - Jan 10 2014

ASJC Scopus subject areas

  • Biochemistry
  • Colloid and Surface Chemistry
  • Chemistry(all)
  • Catalysis

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