Cationic Tungsten(VI) Penta-Methyl Complex: Synthesis, Characterization and its Application in Olefin Metathesis Reaction

Raju Dey; Manoja Samantaray; Emmanuel Callens; Ali Imad Ali Hamieh; Abdul-Hamid M. Emwas; Edy Abou-Hamad; Santosh Giridhar Kavitake; Jean-Marie Basset

doi:10.2516/ogst/2016002

Cationic Tungsten(VI) Penta-Methyl Complex: Synthesis, Characterization and its Application in Olefin Metathesis Reaction

Raju Dey, Manoja Samantaray, Emmanuel Callens, Ali Imad Ali Hamieh, Abdul-Hamid M. Emwas, Edy Abou-Hamad, Santosh Giridhar Kavitake, Jean-Marie Basset

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Abstract

Tungsten-hexa-methyl readily reacts with B(C6F5)3 in dichloromethane and generates the corresponding well-defined cationic tungsten-penta-methyl complex which was identified precisely by 1H NMR, 13C NMR, 1H-13C NMR correlation spectroscopy. Unlike WMe6, this cationic complex has low energy barrier to form tungsten carbene intermediate, which was further supported by the fact that WMe6 alone has no activity in olefin metathesis reaction whereas the cationic complex shows catalytic activity for self-metathesis of 1-octene.

Original language	English (US)
Pages (from-to)	21
Journal	Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles
Volume	71
Issue number	2
DOIs	https://doi.org/10.2516/ogst/2016002
State	Published - Apr 13 2016

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https://repository.kaust.edu.sa/bitstream/10754/609437/1/ogst150156.pdf

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Dey, R., Samantaray, M., Callens, E., Hamieh, A. I. A., Emwas, A.-H. M., Abou-Hamad, E., Kavitake, S. G., & Basset, J.-M. (2016). Cationic Tungsten(VI) Penta-Methyl Complex: Synthesis, Characterization and its Application in Olefin Metathesis Reaction. Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles, 71(2), 21. https://doi.org/10.2516/ogst/2016002

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title = "Cationic Tungsten(VI) Penta-Methyl Complex: Synthesis, Characterization and its Application in Olefin Metathesis Reaction",

abstract = "Tungsten-hexa-methyl readily reacts with B(C6F5)3 in dichloromethane and generates the corresponding well-defined cationic tungsten-penta-methyl complex which was identified precisely by 1H NMR, 13C NMR, 1H-13C NMR correlation spectroscopy. Unlike WMe6, this cationic complex has low energy barrier to form tungsten carbene intermediate, which was further supported by the fact that WMe6 alone has no activity in olefin metathesis reaction whereas the cationic complex shows catalytic activity for self-metathesis of 1-octene.",

author = "Raju Dey and Manoja Samantaray and Emmanuel Callens and Hamieh, {Ali Imad Ali} and Emwas, {Abdul-Hamid M.} and Edy Abou-Hamad and Kavitake, {Santosh Giridhar} and Jean-Marie Basset",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by funds from King Abdullah University of Science and Technology. RD would like to acknowledge SABIC for his SABIC postdoctoral fellowship.",

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AU - Dey, Raju

AU - Samantaray, Manoja

AU - Callens, Emmanuel

AU - Hamieh, Ali Imad Ali

AU - Emwas, Abdul-Hamid M.

AU - Abou-Hamad, Edy

AU - Kavitake, Santosh Giridhar

AU - Basset, Jean-Marie

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by funds from King Abdullah University of Science and Technology. RD would like to acknowledge SABIC for his SABIC postdoctoral fellowship.

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N2 - Tungsten-hexa-methyl readily reacts with B(C6F5)3 in dichloromethane and generates the corresponding well-defined cationic tungsten-penta-methyl complex which was identified precisely by 1H NMR, 13C NMR, 1H-13C NMR correlation spectroscopy. Unlike WMe6, this cationic complex has low energy barrier to form tungsten carbene intermediate, which was further supported by the fact that WMe6 alone has no activity in olefin metathesis reaction whereas the cationic complex shows catalytic activity for self-metathesis of 1-octene.

AB - Tungsten-hexa-methyl readily reacts with B(C6F5)3 in dichloromethane and generates the corresponding well-defined cationic tungsten-penta-methyl complex which was identified precisely by 1H NMR, 13C NMR, 1H-13C NMR correlation spectroscopy. Unlike WMe6, this cationic complex has low energy barrier to form tungsten carbene intermediate, which was further supported by the fact that WMe6 alone has no activity in olefin metathesis reaction whereas the cationic complex shows catalytic activity for self-metathesis of 1-octene.

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Cationic Tungsten(VI) Penta-Methyl Complex: Synthesis, Characterization and its Application in Olefin Metathesis Reaction

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