Volume 43, Issue 46 pp. 6366-6369

Communication

An Iridium Difluoroketene Complex: Synthesis and Isolation^†

Joseph G. Cordaro,

Joseph G. Cordaro

Department of Chemistry, University of California Berkeley, CA 94720-1460, USA, Fax: (+1) 510-642-7714

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Herman van Halbeek,

Herman van Halbeek

Department of Chemistry, University of California Berkeley, CA 94720-1460, USA, Fax: (+1) 510-642-7714

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Robert G. Bergman Prof.,

Robert G. Bergman Prof.

[email protected]

Department of Chemistry, University of California Berkeley, CA 94720-1460, USA, Fax: (+1) 510-642-7714

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Joseph G. Cordaro,

Joseph G. Cordaro

Department of Chemistry, University of California Berkeley, CA 94720-1460, USA, Fax: (+1) 510-642-7714

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Herman van Halbeek,

Herman van Halbeek

Department of Chemistry, University of California Berkeley, CA 94720-1460, USA, Fax: (+1) 510-642-7714

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Robert G. Bergman Prof.,

Robert G. Bergman Prof.

[email protected]

Department of Chemistry, University of California Berkeley, CA 94720-1460, USA, Fax: (+1) 510-642-7714

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First published: 23 November 2004

https://doi.org/10.1002/anie.200461402

Citations: 32

^†

Supported by the U.S. National Science Foundation through grant no. CHE-0094349. Funding for the AV-500 spectrometer was made available through grants from the NSF (CHE 0130862) and NIH (S10 RR 016634). We gratefully thank Ms. Cathleen M. Yung for assistance with low-temperature NMR experiments and Drs. Fred Hollander and Alan Oliver for X-ray analysis of compound 5.

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Graphical Abstract

Deprotonation of the trifluoroacyl hydride complex 1 with tert-butyllithium leads to difluoroketene adduct 2. Coordination of the difluoroketene to iridium through the CC bond is confirmed by X-ray diffraction (see scheme). This complex is the first isolated and characterized dihaloketene complex and provides the only structural data for difluoroketene.

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Volume43, Issue46

November 26, 2004

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An Iridium Difluoroketene Complex: Synthesis and Isolation^†

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An Iridium Difluoroketene Complex: Synthesis and Isolation^†