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

Peiyi Li, Birte Ahrens, Andrew D. Bond, John E. Davies, Olivia F. Koentjoro, Paul R. Raithby, Simon J. Teat

Research output: Contribution to journalArticlepeer-review

17 Citations (SciVal)

Abstract

A series of novel digold complexes incorporating ethynyl pyridine derivatives as a spacer unit, [(R3P)Au(C≡C)X(C≡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C)(X)(C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⋯d10 Au⋯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.

Original languageEnglish
Pages (from-to)1635-1646
Number of pages12
JournalDalton Transactions
Issue number12
DOIs
Publication statusPublished - 11 Mar 2008

ASJC Scopus subject areas

  • Chemistry(all)

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