Well-Defined Supported Mononuclear Tungsten Oxo Species as Olefin Metathesis Pre-Catalysts
[WOCl4] was grafted on silica dehydroxylated at 200 °C, and the structure of the surface species was elucidated by a combination of spectroscopic and theoretical methods, demonstrating the formation of [(SiO)2WOCl2] (1a) as the major species accompanied by minor monopodal species [(SiO)WOCl3] (1b...
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| Veröffentlicht in: | ACS catalysis 2014-11, Vol.4 (11), p.4232-4241 |
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| creator | Bouhoute, Yassine Garron, Anthony Grekov, Denys Merle, Nicolas Szeto, Kai C. De Mallmann, Aimery Del Rosal, Iker Maron, Laurent Girard, Guillaume Gauvin, Régis M. Delevoye, Laurent Taoufik, Mostafa |
| description | [WOCl4] was grafted on silica dehydroxylated at 200 °C, and the structure of the surface species was elucidated by a combination of spectroscopic and theoretical methods, demonstrating the formation of [(SiO)2WOCl2] (1a) as the major species accompanied by minor monopodal species [(SiO)WOCl3] (1b). Most noteworthy, EXAFS and 17O NMR combined to DFT calculations helped elucidate the structure of the surface species. Alkylation was performed using SnMe4, affording methyl species that were also precisely characterized. The alkylated species achieved excellent performances in isobutene metathesis to 2,3-dimethylbutene. |
| doi_str_mv | 10.1021/cs501294j |
| format | Article |
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Most noteworthy, EXAFS and 17O NMR combined to DFT calculations helped elucidate the structure of the surface species. Alkylation was performed using SnMe4, affording methyl species that were also precisely characterized. 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Most noteworthy, EXAFS and 17O NMR combined to DFT calculations helped elucidate the structure of the surface species. Alkylation was performed using SnMe4, affording methyl species that were also precisely characterized. 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| title | Well-Defined Supported Mononuclear Tungsten Oxo Species as Olefin Metathesis Pre-Catalysts |
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