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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
Journal of the American Chemical Society (2013)
  • Manoja K. Samantaray, King Abdullah University of Science & Technology
  • Emmanuel Callens, King Abdullah University of Science & Technology
  • Edy Abou-Hamad, King Abdullah University of Science and Technology
  • Aaron J. Rossini, Université de Lyon
  • Cory M. Widdifield, Université de Lyon,
  • Raju Dey, King Abdullah University of Science & Technology
  • Lyndon Emsley, University of Lyon
  • Jean-Marie Basset, King Abdullah University of Science and Technology
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.
Publication Date
December 26, 2013
DOI
10.1021/ja410747g
Publisher Statement
Reprinted (adapted) with permission from Journal of the American Chemical Society, 136(3); 1054-1061. Doi: 10.1021/ja410747g. Copyright 2013 American Chemical Society.
Citation Information
Manoja K. Samantaray, Emmanuel Callens, Edy Abou-Hamad, Aaron J. Rossini, et al.. "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" Journal of the American Chemical Society Vol. 136 Iss. 3 (2013) p. 1054 - 1061
Available at: http://works.bepress.com/aaron-rossini/13/