Alkane metathesis with the tantalum methylidene [(≡SiO)Ta(=CH2)Me2]/[(≡SiO)2Ta(=CH2)Me] generated from well-defined surface organometallic complex [(≡SiO)TaVMe4]
Type
ArticleAuthors
Chen, YinAbou-Hamad, Edy

Hamieh, Ali Imad Ali

Hamzaoui, Bilel

Emsley, Lyndon
Basset, Jean-Marie

KAUST Department
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)Chemical Science Program
KAUST Catalysis Center (KCC)
KAUST Solar Center (KSC)
Physical Science and Engineering (PSE) Division
Date
2015-01-05Online Publication Date
2015-01-05Print Publication Date
2015-01-21Permanent link to this record
http://hdl.handle.net/10754/575636
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Show full item recordAbstract
By grafting TaMe5 on Aerosil700, a stable, well-defined, silica-supported tetramethyl tantalum(V) complex, [(≡SiO)TaMe4], is obtained on the silica surface. After thermal treatment at 150 °C, the complex is transformed into two surface tantalum methylidenes, [(≡SiO)2Ta(=CH2)Me] and [(≡SiO)Ta(=CH2)Me2], which are active in alkane metathesis and comparable to the previously reported [(≡SiO)2TaHx]. Here we present the first experimental study to isolate and identify a surface tantalum carbene as the intermediate in alkane metathesis. A systematic experimental study reveals a new reasonable pathway for this reaction.Citation
Chen, Y., Abou-hamad, E., Hamieh, A., Hamzaoui, B., Emsley, L., & Basset, J.-M. (2015). Alkane Metathesis with the Tantalum Methylidene [(≡SiO)Ta(═CH2)Me2]/[(≡SiO)2Ta(═CH2)Me] Generated from Well-Defined Surface Organometallic Complex [(≡SiO)TaVMe4]. Journal of the American Chemical Society, 137(2), 588–591. doi:10.1021/ja5113468Sponsors
We thank KAUST for the generous financial support. This paper is dedicated to Yves Chauvin.Publisher
American Chemical Society (ACS)PubMed ID
25557135ae974a485f413a2113503eed53cd6c53
10.1021/ja5113468
Scopus Count
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