Issue 34, 2008

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

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

Supplementary files

Article information

Article type
Communication
Submitted
15 Apr 2008
Accepted
28 May 2008
First published
22 Jul 2008

Dalton Trans., 2008, 4552-4554

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, 4552 DOI: 10.1039/B806358C

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