Surface versus molecular siloxy ligands in well-defined olefin metathesis catalysts: [{(RO)3SiO}Mo(=NAr)(=CHtBu)(CH2tBu)]

Frédéric Blanc; Christophe Copéret; Jean Thivolle-Cazat; Jean Marie Basset; Anne Lesage; Lyndon Emsley; Amritanshu Sinha; Richard R. Schrock

doi:10.1002/anie.200503205

Surface versus molecular siloxy ligands in well-defined olefin metathesis catalysts: [{(RO)₃SiO}Mo(=NAr)(=CHtBu)(CH₂tBu)]

Frédéric Blanc^*, Christophe Copéret, Jean Thivolle-Cazat, Jean Marie Basset, Anne Lesage, Lyndon Emsley, Amritanshu Sinha, Richard R. Schrock

^*Corresponding author for this work

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

156 Scopus citations

Abstract

Surface organometallic chemistry: Similar electronic properties of molecular and surface siloxy ligands in 1 m and 1 were revealed by a structural investigation with solid-state NMR spectroscopy and a reactivity study in olefin metathesis. Despite similar initial turnover frequencies, the silica-supported catalyst 1 is more stable than 1 m and allows it to achieve higher turnovers, thus showing the advantage of site isolation on surfaces. (Figure Presented)

Original language	English (US)
Pages (from-to)	1216-1220
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	45
Issue number	8
DOIs	https://doi.org/10.1002/anie.200503205
State	Published - Feb 13 2006
Externally published	Yes

Keywords

Carbene ligands
Heterogeneous catalysis
Metathesis
Molybdenum

ASJC Scopus subject areas

Catalysis
General Chemistry

Access to Document

10.1002/anie.200503205

Cite this

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title = "Surface versus molecular siloxy ligands in well-defined olefin metathesis catalysts: [{(RO)3SiO}Mo(=NAr)(=CHtBu)(CH2tBu)]",

abstract = "Surface organometallic chemistry: Similar electronic properties of molecular and surface siloxy ligands in 1 m and 1 were revealed by a structural investigation with solid-state NMR spectroscopy and a reactivity study in olefin metathesis. Despite similar initial turnover frequencies, the silica-supported catalyst 1 is more stable than 1 m and allows it to achieve higher turnovers, thus showing the advantage of site isolation on surfaces. (Figure Presented)",

keywords = "Carbene ligands, Heterogeneous catalysis, Metathesis, Molybdenum",

author = "Fr{\'e}d{\'e}ric Blanc and Christophe Cop{\'e}ret and Jean Thivolle-Cazat and Basset, {Jean Marie} and Anne Lesage and Lyndon Emsley and Amritanshu Sinha and Schrock, {Richard R.}",

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T1 - Surface versus molecular siloxy ligands in well-defined olefin metathesis catalysts

T2 - [{(RO)3SiO}Mo(=NAr)(=CHtBu)(CH2tBu)]

AU - Blanc, Frédéric

AU - Copéret, Christophe

AU - Thivolle-Cazat, Jean

AU - Basset, Jean Marie

AU - Lesage, Anne

AU - Emsley, Lyndon

AU - Sinha, Amritanshu

AU - Schrock, Richard R.

PY - 2006/2/13

Y1 - 2006/2/13

N2 - Surface organometallic chemistry: Similar electronic properties of molecular and surface siloxy ligands in 1 m and 1 were revealed by a structural investigation with solid-state NMR spectroscopy and a reactivity study in olefin metathesis. Despite similar initial turnover frequencies, the silica-supported catalyst 1 is more stable than 1 m and allows it to achieve higher turnovers, thus showing the advantage of site isolation on surfaces. (Figure Presented)

AB - Surface organometallic chemistry: Similar electronic properties of molecular and surface siloxy ligands in 1 m and 1 were revealed by a structural investigation with solid-state NMR spectroscopy and a reactivity study in olefin metathesis. Despite similar initial turnover frequencies, the silica-supported catalyst 1 is more stable than 1 m and allows it to achieve higher turnovers, thus showing the advantage of site isolation on surfaces. (Figure Presented)

KW - Carbene ligands

KW - Heterogeneous catalysis

KW - Metathesis

KW - Molybdenum

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U2 - 10.1002/anie.200503205

DO - 10.1002/anie.200503205

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JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

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