Metal cluster terminated "molecular wires"

Khairul, W.M.; Porres, L.; Albesa-Jove, D.; Senn, M.S.; Jones, M.; Lydon, D.P.; Howard, J.A.K.; Beeby, A.; Marder, T.B.; Low, P.J.

Abstract

The gold complexes Au(C≡CC6H4C≡CC6H4Me)(PPh3) (3) and {Au(PPh3)}2(μ-C≡CC6H4C≡CC6H4C≡CC6H4C≡C) (6), prepared from the reaction of AuCl(PPh3) with the corresponding terminal or trimethylsilyl protected alkynes, react readily with Ru3(CO)10(μ-dppm) to afford phenylene ethynylene derivatives featuring the Ru3(μ-AuPPh3)(μ-C2R)(CO)7 cluster “end-caps”. The hydrido cluster Ru3(μ-H)(μ-C2C6H4C≡CC6H4Me)(CO)7 (4a) has also been obtained. There are significant differences in the absorption spectra of the organic precursors, the gold complexes and the clusters indicate a mixing of electronic states between the cluster and phenylene ethynylene moieties, while the presence of the Ru3 and in particular Ru3(μ-AuPPh3) cluster end-caps leads to a quenching of the phenylene ethynylene centred emission. The crystallographically determined structures of 3, 4a and Ru3(μ-AuPPh3) (μ-C2C6H4C≡CC6H4Me)(CO)7 (4b) are reported.

Citation

Khairul, W., Porres, L., Albesa-Jove, D., Senn, M., Jones, M., Lydon, D., …Low, P. (2006). Metal cluster terminated "molecular wires". Journal of Cluster Science, 17(1), 65-85. https://doi.org/10.1007/s10876-005-0041-x

• Journal Article Type: Article
• Publication Date: 2006-03
• Journal: Journal of Cluster Science
• Print ISSN: 1040-7278
• Electronic ISSN: 1572-8862
• Publisher: Springer
• Peer Reviewed: Peer Reviewed
• Volume: 17
• Issue: 1
• Pages: 65-85
• DOI: https://doi.org/10.1007/s10876-005-0041-x
• Keywords: Ruthenium, Gold, Cluster, Phenylene ethynylene, Molecular wire.
• Public URL: https://durham-repository.worktribe.com/output/1575441