Issue 34, 2008
From the journal:

Dalton Transactions

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

Michael J. Cowley,a   Jason M. Lynam*a  and  John M. Slatterya  

* Corresponding authors

a Department of Chemistry, Univeristy of York, Heslington, York, UK
E-mail: jml12@york.ac.uk.
Fax: +44(0)1904 432516
Tel: +44(0)1904 432534

Abstract

The conversion of the alkyne complex RhCl(PPri3)2(η2-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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Article information

DOI
https://doi.org/10.1039/B806358C
Article type
Communication
Submitted
15 Apr 2008
Accepted
28 May 2008
First published
22 Jul 2008

Dalton Trans., 2008, 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, 4552 DOI: 10.1039/B806358C

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