Well-Defined Molybdenum Oxo Alkyl Complex Supported on Silica by Surface Organometallic Chemistry: A Highly Active Olefin Metathesis Precatalyst

Nicolas Merle, Frédéric Le Quéméner, Yassine Bouhoute, Kai C. Szeto, Aimery De Mallmann, Samir Barman, Manoja Samantaray, Laurent Delevoye, Régis M. Gauvin, Mostafa Taoufik, Jean-Marie Basset

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The well-defined silica-supported molybdenum oxo alkyl species (SiO−)MoO(CH Bu) was selectively prepared by grafting of MoO(CH Bu)Cl onto partially dehydroxylated silica (silica) using the surface organometallic chemistry approach. This surface species was fully characterized by elemental analysis and DRIFT, solid-state NMR, and EXAFS spectroscopy. This new material is related to the active species of industrial supported MoO/SiO olefin metathesis catalysts. It displays very high activity in propene self-metathesis at mild (turnover number = 90 000 after 25 h). Remarkably, its catalytic performance outpaces those of the parent imido derivative and its tungsten oxo analogue.
Original languageEnglish (US)
Pages (from-to)2144-2147
Number of pages4
JournalJournal of the American Chemical Society
Volume139
Issue number6
DOIs
StatePublished - Feb 6 2017

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