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
Samantaray, Manoja K.; Callens, Emmanuel; Abou-Hamad, Edy; Rossini, Aaron J.; Widdifield, Cory M.; Dey, Raju; Emsley, Lyndon; Basset, Jean-Marie
2014

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 degrees C, demonstrating the stabilizing effect of immobilization of the molecular complex. Above 70 degrees C the grafted complex converts into the two methylidyne surface complexes [( SiO-)W( CH)Me-2] and [( SiO-)(2)W( CH)Me]. All of these silica-supported complexes are active precursors for propane metathesis reactions.

Details

Title 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
Author(s) Samantaray, Manoja K. ; Callens, Emmanuel ; Abou-Hamad, Edy ; Rossini, Aaron J. ; Widdifield, Cory M. ; Dey, Raju ; Emsley, Lyndon ; Basset, Jean-Marie
Published in Journal of the American Chemical Society
Volume 136
Issue 3
Pages 1054-1061
Date 2014
Publisher AMER CHEMICAL SOC
ISSN 0002-7863
DOI https://doi.org/10.1021/ja410747g
Other identifier(s) View record in Web of Science
Laboratories LRM
Record Appears in Scientific production and competences > SB - School of Basic Sciences > ISIC - Institute of Chemical Sciences and Engineering > LRM - Laboratory of Magnetic Resonance
Peer-reviewed publications
Work outside EPFL
Journal Articles
Published
Record creation date 2015-01-08