Synthesis and characterization of a homogeneous and silica supported homoleptic cationic tungsten(vi) methyl complex: application in olefin metathesis
Type
ArticleAuthors
Dey, Raju
Samantaray, Manoja
Poater, Albert

Hamieh, Ali Imad Ali

Kavitake, Santosh Giridhar
Abou-Hamad, Edy

Callens, Emmanuel

Emwas, Abdul-Hamid M.
Cavallo, Luigi

Basset, Jean-Marie

KAUST Department
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)Chemical Science Program
Competitive Research Funds
Imaging and Characterization Core Lab
KAUST Catalysis Center (KCC)
NMR
OCRF- Special Academic Partnership
Physical Science and Engineering (PSE) Division
Date
2016Permanent link to this record
http://hdl.handle.net/10754/622479
Metadata
Show full item recordAbstract
A method for the synthesis of a homogeneous cationic tungsten(VI)penta-methyl complex [(WMe5)(+)(C6F5)(3)BMe-] from neutral tungstenhexamethyl (WMe6) and a silica supported cationic tungstentetramethyl complex [( Si-O-)WMe4+ (C6F5)(3)BMe-] from a neutral silica supported tungstenpentamethyl complex [( Si-O-)WMe5] is described. In both cases a direct demethylation using the B(C6F5)(3) reagent was used. The aforesaid complexes were characterized by liquid or solid state NMR spectroscopy. Interestingly, the homogeneous cationic complex [(WMe5)(+)(C6F5)(3)BMe-] shows moderate activity whereas the supported cationic complex [( Si-O-)WMe4+(C6F5)(3)BMe-] exhibits good activity in olefin metathesis reactions.Citation
Dey R, Samantaray MK, Poater A, Hamieh A, Kavitake S, et al. (2016) Synthesis and characterization of a homogeneous and silica supported homoleptic cationic tungsten(vi) methyl complex: application in olefin metathesis. Chem Commun 52: 11270–11273. Available: http://dx.doi.org/10.1039/c6cc05352a.Sponsors
This work was supported by funds from the King Abdullah University of Science and Technology (KAUST) office of sponsored research (OSR). A. P. thanks the Spanish MINECO for the project CTQ2014-59832-JIN. The authors also thank Dr Nassima Riache for fruitful discussions.Publisher
Royal Society of Chemistry (RSC)Journal
Chemical CommunicationsAdditional Links
http://pubs.rsc.org/en/Content/ArticleLanding/2016/CC/C6CC05352Aae974a485f413a2113503eed53cd6c53
10.1039/c6cc05352a