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Issue 34, 2008
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A mechanistic study into the interconversion of rhodium alkyne, alkynyl hydride and vinylidene complexes

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Abstract

The conversion of the alkyne complex RhCl(PPri3)22-PhC[triple bond, length as m-dash]CH) into its vinylidene isomer RhCl(PPri3)2([double bond, length as m-dash]C[double bond, length as m-dash]CPhH) has been monitored viaNMR spectroscopy in a range of solvents. In THF and hexane solution the reaction was observed to proceed via the alkynyl hydride complex Rh(H)Cl(PPri3)2(–C[triple bond, length as m-dash]CPh). The kinetic profile of the reaction demonstrates that this species is an intermediate in the formation of the vinylidene complex.

Graphical abstract: A mechanistic study into the interconversion of rhodium alkyne, alkynyl hydride and vinylidene complexes

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The article was received on 15 Apr 2008, accepted on 28 May 2008 and first published on 22 Jul 2008


Article type: Communication
DOI: 10.1039/B806358C
Citation: Dalton Trans., 2008,0, 4552-4554
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    A mechanistic study into the interconversion of rhodium alkyne, alkynyl hydride and vinylidene complexes

    M. J. Cowley, J. M. Lynam and J. M. Slattery, Dalton Trans., 2008, 0, 4552
    DOI: 10.1039/B806358C

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