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Published August 28, 2008 | Supplemental Material + Cover Image
Journal Article Open

Ruthenium-Olefin Complexes: Effect of Ligand Variation upon Geometry


The development of a model system to study ruthenium-olefin complexes relevant to the mechanism of olefin metathesis has been reported recently. Upon addition of the ligand precursor 1,2-divinylbenzene to [RuCl2(Py)2(H2IMes)(CHPh)] (H2IMes=1,3-dimesityl-4,5-dihydroimidazol-2-ylidene), two ruthenium-olefin adducts are formed. Based on 1H NMR spectroscopy experiments and X-ray crystallographic analysis, these complexes are assigned as side-bound isomers in which the olefin and H2IMes ligands are coordinated cis to each other. Herein is reported an investigation of the generality of these observations through variation of the N-heterocyclic carbene ligand and the ligand precursor.

Additional Information

© 2008 Wiley-VCH. Received: 30 August 2007; Revised: 11 May 2008; Published online: May 16, 2008. The authors thank Materia Inc., Jacob M. Berlin and Tobias Ritter for generous donation of ruthenium complexes. Lawrence M. Henling and Dr. Michael Day are acknowledged for X-ray crystallographic analysis. D.R.A. acknowledges NSF and NDSEG predoctoral fellowships. D.J.O. thanks the Mellon Foundation for support. R.H.G. was supported by the NSF (CHE-0410425). Supporting information for this article is available on the WWW under http://www.chemeurj.org/ or from the author.

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