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

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    Type
    Article
    Authors
    Chen, Yin
    Abou-Hamad, Edy cc
    Hamieh, Ali Imad Ali cc
    Hamzaoui, Bilel cc
    Emsley, Lyndon
    Basset, Jean-Marie cc
    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
    2015-01-05
    Online Publication Date
    2015-01-05
    Print Publication Date
    2015-01-21
    Permanent link to this record
    http://hdl.handle.net/10754/575636
    
    Metadata
    Show full item record
    Abstract
    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/ja5113468
    Sponsors
    We thank KAUST for the generous financial support. This paper is dedicated to Yves Chauvin.
    Publisher
    American Chemical Society (ACS)
    Journal
    Journal of the American Chemical Society
    DOI
    10.1021/ja5113468
    PubMed ID
    25557135
    ae974a485f413a2113503eed53cd6c53
    10.1021/ja5113468
    Scopus Count
    Collections
    Articles; Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC); Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC); KAUST Solar Center (KSC)

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