The electronic structures of diruthenium complexes containing an oligo(phenylene ethynylene) bridging ligand, and some related molecular structures
作者:Wan M. Khairul、Mark A. Fox、Phil A. Schauer、Dmitry S. Yufit、David Albesa-Jové、Judith A. K. Howard、Paul J. Low
DOI:10.1039/c0dt00809e
日期:——
The complexes [Cp′(L2)Ru}CCC6H4CCC6H2(OMe)2CCC6H4CCRu(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 electronicstructure of these representative ruthenium-capped OPEs investigated using a combination of electrochemical, UV-vis-NIR and IR spectroelectrochemical methods, and
络合物[Cp'(L 2)Ru} C CC 6 H 4 C CC 6 H 2(OMe)2 C CC 6 H 4 C C Ru(L 2)Cp'}]] [L 2 =(PPh 3)2, Cp′ = Cp; L 2 =dppe, Cp′ = Cp *),其中金属中心由低聚亚苯基亚乙炔基(欧佩)配体的制备及其代表性的电子结构。 钌使用电化学,UV-vis-NIR和IR光谱电化学方法以及基于DFT的计算相结合的方法研究了加盖的OPE。这钌复合物被氧化为热力学稳定的双阳离子[Cp'Ru(L 2)C CC 6 H ^ 4 Ç CC 6 H ^ 2(OME)2 C ^ CC 6 H ^ 4 Ç CRU(L 2)的Cp'] 2+,其在光谱电化学和计算结果的基础可以用两个非相互作用的Ru(C CAr)(L 2)Cp'部分来描述。少亚苯基亚乙炔基HC CC 6 H 4 C CC 6 H 2(OMe)2 C的X射线结构CC
Trimethylsilyl-Terminated Oligo(phenylene ethynylene)s: An Approach to Single-Molecule Junctions with Covalent Au–C σ-Bonds
A new and efficient approach using cleaving of trimethylsilyl groups to create covalent Au-C anchoring sites has been developed for single-molecule junction conductance measurements. Employing the mechanically controllable break junction (MCBJ) technique in liquid, we demonstrate the formation of highly conducting single molecular junctions of several OPE derivatives. The created junctions are mechanically