cis–trans Geometrical isomerization of bis(2-pyridinecarboxylato)nitrosylruthenium complex accompanying electrochemical one-electron reduction

cis-[Ru(NO)(CH3CN)(pyca)2] and trans-[Ru(NO)(OH)(pyca)2] (pyca = 2-pyridinecarboxylato) were synthesized and characterized by X-ray crystallography. Electrochemical behaviors of cis-[Ru(NO)(CH3CN)(pyca)2] and cis-[Ru(NO)(CH3O)(pyca)2] in acetonitrile were studied. These complexes showed two reduction processes in CH3CN. The controlled potential electrolyses of cis-[Ru(NO)(CH3O)(pyca)2] in a methanol–acetonitrile mixed solution were performed at the potential of the first reduction process. trans-[Ru(NO)(CH3O)(pyca)2] was isolated from the electrolyzed solution and characterized by IR and CV. The cis–trans geometrical change reaction occurred in the electrochemical one-electron reduction of cis-[Ru(NO)(CH3O)(pyca)2].

cis-[Ru(NO)(CH3CN)(pyca)2]PF6 and trans-[Ru(NO)(OH)(pyca)2] (pyca = 2-pyridinecarboxylato) have been synthesized and characterized. Electrochemical behaviors of the two complexes in CH3CN and the cis-trans geometrical change reaction occurring in the electrochemical one-electron reduction of cis-[Ru(NO)(CH3O)(pyca)2] in CH3OH–CH3CN have been studied.Figure optionsDownload as PowerPoint slide