Silica-Grafted Lanthanum Benzyl Species: ...
Document type :
Article dans une revue scientifique
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Title :
Silica-Grafted Lanthanum Benzyl Species: Synthesis, Characterization, and Catalytic Applications
Author(s) :
Vancompernolle, Tom [Auteur]
Valente, Andreia [Auteur]
Chenal, Thomas [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Zinck, Philippe [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Del Rosal, Iker [Auteur]
Maron, Laurent [Auteur]
Taoufik, Mostafa [Auteur]
Harder, Sjoerd [Auteur]
Gauvin, Regis [Auteur]
Valente, Andreia [Auteur]
Chenal, Thomas [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Zinck, Philippe [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Del Rosal, Iker [Auteur]
Maron, Laurent [Auteur]
Taoufik, Mostafa [Auteur]
Harder, Sjoerd [Auteur]
Gauvin, Regis [Auteur]
Journal title :
Organometallics
Volume number :
36
Pages :
3912-3920
Publication date :
2017-10-03
HAL domain(s) :
Chimie/Catalyse
Chimie/Chimie de coordination
Chimie/Chimie de coordination
English abstract : [en]
The grafting of a lanthanum trisbenzyl derivative onto dehydroxylated silica affords a mixture of [(≡SiO)2La(CH2Ph)(THF)n] and [(≡SiO)La(CH2Ph)2(THF)m] surface sites, in respective proportions of 80 and 20%, as evidenced ...
Show more >The grafting of a lanthanum trisbenzyl derivative onto dehydroxylated silica affords a mixture of [(≡SiO)2La(CH2Ph)(THF)n] and [(≡SiO)La(CH2Ph)2(THF)m] surface sites, in respective proportions of 80 and 20%, as evidenced from mass balance analyses, IR and 1H, 13C and 29Si 1D and 2D solid-state NMR spectroscopy. Significant transfer of alkyl groups from lanthanum to the surface was demonstrated. The grafting mechanism was also probed by DFT calculations, which confirm that benzyl group transfer from the lanthanum to the surface (via Si–O–Si cleavage) occurs readily. This material proved to be active in alkyne dimerization and in ethylene, styrene, and ε-caprolactone homopolymerization.Show less >
Show more >The grafting of a lanthanum trisbenzyl derivative onto dehydroxylated silica affords a mixture of [(≡SiO)2La(CH2Ph)(THF)n] and [(≡SiO)La(CH2Ph)2(THF)m] surface sites, in respective proportions of 80 and 20%, as evidenced from mass balance analyses, IR and 1H, 13C and 29Si 1D and 2D solid-state NMR spectroscopy. Significant transfer of alkyl groups from lanthanum to the surface was demonstrated. The grafting mechanism was also probed by DFT calculations, which confirm that benzyl group transfer from the lanthanum to the surface (via Si–O–Si cleavage) occurs readily. This material proved to be active in alkyne dimerization and in ethylene, styrene, and ε-caprolactone homopolymerization.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse et synthèse éco-compatible (CASECO)
Méthodologie organométallique pour la catalyse homogène (MOCAH)
Méthodologie organométallique pour la catalyse homogène (MOCAH)
Submission date :
2019-09-25T14:05:55Z
2021-06-01T14:15:57Z
2021-06-01T14:15:57Z
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- SI1.pdf
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- DFT Atomic coordinate.xyz
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