The electronic structures of diruthenium complexes containing an oligo(phenylene ethynylene) bridging ligand, and some related molecular structures

Khairul, Wan M.; Fox, Mark A.; Schauer, Phil A.; Yufit, Dmitry S.; Albesa-Jové, David; Howard, Judith A.K.; Low, Paul J.

Abstract

The complexes [{Cp′(L2)Ru}CCC6H4CCC6H2(OMe)2CCC6H4CC{Ru(L2)Cp′}](L2 = (PPh3)2, Cp′ = Cp; L2 = dppe, Cp′ = Cp*) in which the metal centres are bridged by an oligomeric phenylene ethynylene (OPE) ligand have been prepared and the electronic structure of these representative ruthenium-capped OPEs investigated using a combination of electrochemical, UV-vis-NIR and IR spectroelectrochemical methods, and DFT-based calculations. The diruthenium complexes are oxidised to the thermodynamically stable dications [Cp′Ru(L2)CCC6H4CCC6H2(OMe)2CCC6H4CCRu(L2)Cp′]2+, which on the basis of the spectroelectrochemical and computational results can be described in terms of two non-interacting Ru(CCAr)(L2)Cp′ moieties. X-ray structures of the oligophenyleneethynylene HCCC6H4CCC6H2(OMe)2CCC6H4CCH, the bis(gold) complex Ph3PAuCCC6H4CCC6H2(OMe)2CCC6H4CCAuPPh3 and the precursor 1-ethynyl-4-(trimethylsilylethynyl)benzene are also reported.

Citation

Khairul, W. M., Fox, M. A., Schauer, P. A., Yufit, D. S., Albesa-Jové, D., Howard, J. A., & Low, P. J. (2010). The electronic structures of diruthenium complexes containing an oligo(phenylene ethynylene) bridging ligand, and some related molecular structures. Dalton Transactions, 39(48), 11605-11615. https://doi.org/10.1039/c0dt00809e

• Journal Article Type: Article
• Publication Date: Dec 28, 2010
• Deposit Date: Dec 14, 2011
• Journal: Dalton Transactions
• Print ISSN: 1477-9226
• Electronic ISSN: 1477-9234
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 39
• Issue: 48
• Pages: 11605-11615
• DOI: https://doi.org/10.1039/c0dt00809e
• Public URL: https://durham-repository.worktribe.com/output/1501975