Understanding the reactivity of [W{double bond, long}NAr(CH2tBu)2({double bond, long}CHtBu)] (Ar = 2,6-iPrC6H3) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry

Bouchra Rhers; Elsje Alessandra Quadrelli; Anne Baudouin; Mostafa Taoufik; Christophe Copéret; Frédéric Lefebvre; Jean Marie Basset; Bernard Fenet; Amritanshu Sinha; Richard R. Schrock

doi:10.1016/j.jorganchem.2006.09.019

Understanding the reactivity of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry

Bouchra Rhers, Elsje Alessandra Quadrelli, Anne Baudouin, Mostafa Taoufik, Christophe Copéret, Frédéric Lefebvre^*, Jean Marie Basset, Bernard Fenet, Amritanshu Sinha, Richard R. Schrock

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Reaction of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydoxylated at 200 °C does not lead only to the expected bisgrafted [({triple bond, long}SiO)₂W{double bond, long}NAr({double bond, long}CHtBu)] species, but also surface reaction intermediates such as [({triple bond, long}SiO)₂W{double bond, long}NAr(CH₂tBu)₂]. All these species were characterized by infrared spectroscopy, 1D and 2D solid state NMR, elemental analysis and molecular models obtained by using silsesquioxanes. While a mixture of several surface species, the resulting material displays high activity in the olefin metathesis.

Original language	English (US)
Pages (from-to)	5448-5455
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	691
Issue number	24-25
DOIs	https://doi.org/10.1016/j.jorganchem.2006.09.019
State	Published - Dec 1 2006
Externally published	Yes

Keywords

IR
Olefin metathesis
Silica
Solid state NMR
Surface organometallic chemistry
Tungsten

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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Rhers, B., Quadrelli, E. A., Baudouin, A., Taoufik, M., Copéret, C., Lefebvre, F., Basset, J. M., Fenet, B., Sinha, A., & Schrock, R. R. (2006). Understanding the reactivity of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry. Journal of Organometallic Chemistry, 691(24-25), 5448-5455. https://doi.org/10.1016/j.jorganchem.2006.09.019

Rhers, Bouchra ; Quadrelli, Elsje Alessandra ; Baudouin, Anne et al. / Understanding the reactivity of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry. In: Journal of Organometallic Chemistry. 2006 ; Vol. 691, No. 24-25. pp. 5448-5455.

@article{a0a32ac8d795400eb3fa4abec21405ce,

title = "Understanding the reactivity of [W{double bond, long}NAr(CH2tBu)2({double bond, long}CHtBu)] (Ar = 2,6-iPrC6H3) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry",

abstract = "Reaction of [W{double bond, long}NAr(CH2tBu)2({double bond, long}CHtBu)] (Ar = 2,6-iPrC6H3) with silica partially dehydoxylated at 200 °C does not lead only to the expected bisgrafted [({triple bond, long}SiO)2W{double bond, long}NAr({double bond, long}CHtBu)] species, but also surface reaction intermediates such as [({triple bond, long}SiO)2W{double bond, long}NAr(CH2tBu)2]. All these species were characterized by infrared spectroscopy, 1D and 2D solid state NMR, elemental analysis and molecular models obtained by using silsesquioxanes. While a mixture of several surface species, the resulting material displays high activity in the olefin metathesis.",

keywords = "IR, Olefin metathesis, Silica, Solid state NMR, Surface organometallic chemistry, Tungsten",

author = "Bouchra Rhers and Quadrelli, {Elsje Alessandra} and Anne Baudouin and Mostafa Taoufik and Christophe Cop{\'e}ret and Fr{\'e}d{\'e}ric Lefebvre and Basset, {Jean Marie} and Bernard Fenet and Amritanshu Sinha and Schrock, {Richard R.}",

year = "2006",

month = dec,

day = "1",

doi = "10.1016/j.jorganchem.2006.09.019",

language = "English (US)",

volume = "691",

pages = "5448--5455",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier",

number = "24-25",

}

Rhers, B, Quadrelli, EA, Baudouin, A, Taoufik, M, Copéret, C, Lefebvre, F, Basset, JM, Fenet, B, Sinha, A & Schrock, RR 2006, 'Understanding the reactivity of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry', Journal of Organometallic Chemistry, vol. 691, no. 24-25, pp. 5448-5455. https://doi.org/10.1016/j.jorganchem.2006.09.019

Understanding the reactivity of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry. / Rhers, Bouchra; Quadrelli, Elsje Alessandra; Baudouin, Anne et al.
In: Journal of Organometallic Chemistry, Vol. 691, No. 24-25, 01.12.2006, p. 5448-5455.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Understanding the reactivity of [W{double bond, long}NAr(CH2tBu)2({double bond, long}CHtBu)] (Ar = 2,6-iPrC6H3) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry

AU - Rhers, Bouchra

AU - Quadrelli, Elsje Alessandra

AU - Baudouin, Anne

AU - Taoufik, Mostafa

AU - Copéret, Christophe

AU - Lefebvre, Frédéric

AU - Basset, Jean Marie

AU - Fenet, Bernard

AU - Sinha, Amritanshu

AU - Schrock, Richard R.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Reaction of [W{double bond, long}NAr(CH2tBu)2({double bond, long}CHtBu)] (Ar = 2,6-iPrC6H3) with silica partially dehydoxylated at 200 °C does not lead only to the expected bisgrafted [({triple bond, long}SiO)2W{double bond, long}NAr({double bond, long}CHtBu)] species, but also surface reaction intermediates such as [({triple bond, long}SiO)2W{double bond, long}NAr(CH2tBu)2]. All these species were characterized by infrared spectroscopy, 1D and 2D solid state NMR, elemental analysis and molecular models obtained by using silsesquioxanes. While a mixture of several surface species, the resulting material displays high activity in the olefin metathesis.

AB - Reaction of [W{double bond, long}NAr(CH2tBu)2({double bond, long}CHtBu)] (Ar = 2,6-iPrC6H3) with silica partially dehydoxylated at 200 °C does not lead only to the expected bisgrafted [({triple bond, long}SiO)2W{double bond, long}NAr({double bond, long}CHtBu)] species, but also surface reaction intermediates such as [({triple bond, long}SiO)2W{double bond, long}NAr(CH2tBu)2]. All these species were characterized by infrared spectroscopy, 1D and 2D solid state NMR, elemental analysis and molecular models obtained by using silsesquioxanes. While a mixture of several surface species, the resulting material displays high activity in the olefin metathesis.

KW - IR

KW - Olefin metathesis

KW - Silica

KW - Solid state NMR

KW - Surface organometallic chemistry

KW - Tungsten

UR - http://www.scopus.com/inward/record.url?scp=33751211847&partnerID=8YFLogxK

U2 - 10.1016/j.jorganchem.2006.09.019

DO - 10.1016/j.jorganchem.2006.09.019

M3 - Article

AN - SCOPUS:33751211847

SN - 0022-328X

VL - 691

SP - 5448

EP - 5455

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 24-25

ER -

Rhers B, Quadrelli EA, Baudouin A, Taoufik M, Copéret C, Lefebvre F et al. Understanding the reactivity of [W{double bond, long}NAr(CH₂tBu)₂({double bond, long}CHtBu)] (Ar = 2,6-iPrC₆H₃) with silica partially dehydroxylated at low temperatures through a combined use of molecular and surface organometallic chemistry. Journal of Organometallic Chemistry. 2006 Dec 1;691(24-25):5448-5455. doi: 10.1016/j.jorganchem.2006.09.019