Monatshefte für Chemie - Chemical Monthly

, Volume 143, Issue 6, pp 901–908 | Cite as

On the isomerization of a trans-dichloro to a cis-dichloro amide-chelated ruthenium benzylidene complex and the catalytic scope of these species in olefin metathesis

Original Paper
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Accepted:

Abstract

Upon comparative NMR spectroscopy studies, the isomerization of newly disclosed dichloro [κ2(C,O)-2-(N-propylaminocarbonyl)benzylidene][1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene]ruthenium from trans-dichloro configuration (SPY-5-31) to its thermodynamically more favored cis-dichloro derivative (with SPY-5-34 stereochemistry) was found to proceed via dissociation of one chloride ligand to form an intermediate cationic species. Furthermore, the performance of the trans- and the cis-dichloro derivatives as catalysts in ring-closing metathesis and as initiators in ring-opening metathesis polymerization was studied.

Graphical abstract

Keywords

Organometallic compounds Homogeneous catalysis Structure–activity relationships Polymerizations 
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Notes

Acknowledgments

Financial support by the European Community (Grant no. CP-FP 211468-2 EUMET) is gratefully acknowledged.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Anita Leitgeb
    • 1
  • Kurt Mereiter
    • 2
  • Christian Slugovc
    • 1
  1. 1.Institute for Chemistry and Technology of MaterialsGraz University of TechnologyGrazAustria
  2. 2.Institute of Chemical Technology and AnalyticsVienna University of TechnologyViennaAustria

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