Article (Scientific journals)
Mixed Isobutylphobane/N-Heterocyclic Carbene Ruthenium-Indenylidene Complexes: Synthesis and Catalytic Evaluation in Olefin Metathesis Reactions
Sauvage, Xavier; Zaragoza, Guillermo; Demonceau, Albert et al.
2010In Advanced Synthesis and Catalysis, 352 (11-12), p. 1934-1948
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Keywords :
ethenolysis; homogeneous catalysis; N-heterocyclic carbenes; phosphane ligands; ring-closing metathesis; ruthenium
Abstract :
[en] Two new second generation ruthenium(11) dichloride-indenylidene complexes [RuCl2(9-isobutylphosphabicyclo[3.3.1]nonane)(NHC)(3-phenyl-1-indenylide ne)1, where NHC,3-bis(2,4,6-tri-methylphenyl)imidazolin-2-ylidene (SIMes) or its unsaturated imidazol-2-ylidene analogue (1Mes). were isolated in high yields upon heating a tetrahydrofuran (THF) solution of the diphosphane complex [RuCl2(isobutylphobane)2(3-phenyl-1-indenylidene)] with a two-fold excess of the corresponding imidazol(in)ium-2-carboxylate zwitterions. Both products were characterized by H-1, C-13, and P-33 NMR spectroscopy, and the molecular structure of [RuCl2(isobutylphobane)(SIMes)(3-phenyl-1-indenylidene)] was determined by X-ray diffraction analysis. A close inspection of the packing structure revealed the presence of different types of intra- and intermolecular interactions that enhanced the global stability of the crystals, while low temperature NMR experiments showed the existence of two distinct rotational isomers due to the unsymmetrical nature of the phobane ligand The catalytic activity of both compounds was assessed in olefin metathesis using
Disciplines :
Chemistry
Author, co-author :
Sauvage, Xavier ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Zaragoza, Guillermo
Demonceau, Albert ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Delaude, Lionel  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Language :
English
Title :
Mixed Isobutylphobane/N-Heterocyclic Carbene Ruthenium-Indenylidene Complexes: Synthesis and Catalytic Evaluation in Olefin Metathesis Reactions
Publication date :
2010
Journal title :
Advanced Synthesis and Catalysis
ISSN :
1615-4150
eISSN :
1615-4169
Publisher :
Wiley-VCH, Weinheim, Germany
Volume :
352
Issue :
11-12
Pages :
1934-1948
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 November 2010

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