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dc.contributor.authorHamieh, Ali Imad Ali
dc.contributor.authorDey, Raju
dc.contributor.authorSamantaray, Manoja
dc.contributor.authorAbdel-Azeim, Safwat
dc.contributor.authorAbou-Hamad, Edy
dc.contributor.authorChen, Yin
dc.contributor.authorPelletier, Jeremie
dc.contributor.authorCavallo, Luigi
dc.contributor.authorBasset, Jean-Marie
dc.date.accessioned2016-11-03T13:22:38Z
dc.date.available2016-11-03T13:22:38Z
dc.date.issued2016-07-28
dc.identifier.citationHamieh A, Dey R, Samantaray MK, Abdel-Azeim S, Abou-Hamad E, et al. (2016) Investigation of Surface Alkylation Strategy in SOMC: In Situ Generation of a Silica-Supported Tungsten Methyl Catalyst for Cyclooctane Metathesis. Organometallics 35: 2524–2531. Available: http://dx.doi.org/10.1021/acs.organomet.6b00432.
dc.identifier.issn0276-7333
dc.identifier.issn1520-6041
dc.identifier.doi10.1021/acs.organomet.6b00432
dc.identifier.urihttp://hdl.handle.net/10754/621681
dc.description.abstractAn efficient and potentially scalable method is described for the synthesis of the silica-supported complexes [(≡Si-O-)WMe5] and [(≡Si-O-)WMe2(≡CH)] obtained by in situ alkylation of the surface-grafted tungsten chloride [(≡Si-O-)WCl5] (1). [(≡Si-O-)WCl5] can be readily prepared by the reaction of commercially available and stable tungsten hexachloride WCl6 with partially dehydroxylated silica at 700 °C (SiO2-700). Further reaction with ZnMe2 at room temperature rapidly forms a mixture of surface-alkylated tungsten complexes. They were fully characterized by microanalysis, FTIR, mass balance, and solid-state NMR (1H, 13C, 1H-13C HETCOR, 1H-1H double quantum and triple quantum) and identified as [(≡Si-O-)WMe5] and another product, [(≡Si-O-)WMe2(≡CH)]. The latter might have been generated by partial decomposition of the tungsten methyl chloride compound, which is formed during the stepwise alkylation of [(≡Si-O-)WCl5]. DFT calculations were carried out to check the relative stability of the tungsten methyl chloride intermediates and the feasibility of the reaction and corroborate the experimental results. This tungsten complex and its derivative were found to be active catalysts for the metathesis of cyclooctane. © 2016 American Chemical Society.
dc.description.sponsorshipThis work was supported by the funds from the King Abdullah University of Science and Technology (KAUST).
dc.publisherAmerican Chemical Society (ACS)
dc.titleInvestigation of Surface Alkylation Strategy in SOMC: In Situ Generation of a Silica-Supported Tungsten Methyl Catalyst for Cyclooctane Metathesis
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.identifier.journalOrganometallics
kaust.personHamieh, Ali Imad Ali
kaust.personDey, Raju
kaust.personSamantaray, Manoja
kaust.personAbdel-Azeim, Safwat
kaust.personAbou-Hamad, Edy
kaust.personChen, Yin
kaust.personPelletier, Jeremie
kaust.personCavallo, Luigi
kaust.personBasset, Jean-Marie


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