Issue 12, 2008
From the journal:

Dalton Transactions

A new series of dinuclear Au(i) complexes linked by diethynylpyridine groups†‡

Peiyi Li,a   Birte Ahrens,b   Andrew D. Bond,a   John E. Davies,a   Olivia F. Koentjoro,b   Paul R. Raithby*b  and  Simon J. Teatc  

* Corresponding authors

a Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK

b Department of Chemistry, University of Bath, Claverton Down, Bath, UK
E-mail: p.r.raithby@bath.ac.uk

c STFC Daresbury Laboratory, Daresbury, Warrington, UK

Abstract

A series of novel digold complexes incorporating ethynyl pyridine derivatives as a spacer unit, [(R3P)Au(C[triple bond, length as m-dash]C)X(C[triple bond, length as m-dash]C)Au(PR3)] (R = Ph, X = 2,5-pyridine (1); R = Cy (cyclohexane), X = 2,5-pyridine (2); R = Ph, X = 2,6-pyridine (3); R = Ph, X = 2,5′-bipyridine (4); R = Ph, X = 2,6′-bipyridine (5)), has been synthesised. All the complexes have been characterised spectroscopically and the structures determined by single-crystal X-ray crystallography. The central (C[triple bond, length as m-dash]C)(X)(C[triple bond, length as m-dash]C) unit is essentially linear for complexes 1, 2 and 4 and kinked for complexes 3 and 5, but only in 1, with the shortest spacer group and the less bulky phosphine ligand, is there evidence of d10⋯d10Au⋯Au interactions (Au–Au 3.351(2) Å). The solution UV/visible absorption and emission spectra for all the complexes are similar to those of the free ligands suggesting that the spectra are dominated by π–π* ligand-centred transitions and this is confirmed by DFT calculations.

Graphical abstract: A new series of dinuclear Au(i) complexes linked by diethynylpyridine groups

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Article information

DOI
https://doi.org/10.1039/B716664H
Article type
Paper
Submitted
30 Oct 2007
Accepted
18 Dec 2007
First published
24 Jan 2008

Dalton Trans., 2008, 1635-1646

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A new series of dinuclear Au(I) complexes linked by diethynylpyridine groups

P. Li, B. Ahrens, A. D. Bond, J. E. Davies, O. F. Koentjoro, P. R. Raithby and S. J. Teat, Dalton Trans., 2008, 1635 DOI: 10.1039/B716664H

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