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Published September 3, 2001 | Supplemental Material
Journal Article Open

Novel η^3- Vinylcarbene Complexes Derived from Ruthenium-Based Olefin Metathesis Catalysts


Electron-rich, disubstituted alkynes react with (H_2IMes)(PCy_3)(Cl)_2Ru═CHPh (1; H_2IMes = 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene) to form phosphine-free η^3-vinylcarbene complexes. An X-ray diffraction study on (H_2IMes)(Cl)_2Ru[η^3-(CHPh)(CPh)(CPh)] (2) confirms the unusual structure. These complexes are relevant to the mechanisms of olefin metathesis and alkyne polymerization.

Additional Information

© 2001 American Chemical Society. Received 17 April 2001. Published online 9 August 2001. Published in print 1 September 2001. This research was supported by the National Science Foundation. T.M.T. also acknowledges the U.S. Department of Defense for an NDSEG graduate fellowship. We thank Lawrence M. Henling (Caltech) for assistance with the crystallography.

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