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Issue 2, 2009
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Alkyl dehydrogenation in a Rh(I) complex via an isolated agostic intermediate

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Abstract

A well-characterised 14-electron rhodium phosphine complex, [Rh(PiPr3)3][BArF4], which contains a β-CH agostic interaction, is observed to undergo spontaneous dehydrogenation to afford [Rh(PiPr3)2(PiPr2(C3H5))][BArF4]; calculations on a model system show that while C–H activation is equally accessible from the β-CH agostic species or an alternative γ-CH agostic isomer, subsequent β-H-transfer can only be achieved along pathways originating from the β-CH agostic form.

Graphical abstract: Alkyl dehydrogenation in a Rh(i) complex via an isolated agostic intermediate

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Publication details

The article was received on 24 Sep 2008, accepted on 31 Oct 2008 and first published on 19 Nov 2008


Article type: Communication
DOI: 10.1039/B816739G
Citation: Chem. Commun., 2009,0, 244-246
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    Alkyl dehydrogenation in a Rh(I) complex via an isolated agostic intermediate

    A. B. Chaplin, A. I. Poblador-Bahamonde, H. A. Sparkes, J. A. K. Howard, S. A. Macgregor and A. S. Weller, Chem. Commun., 2009, 0, 244
    DOI: 10.1039/B816739G

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