Diruthenium compounds of heterocycle-containing acetylides

Novel diruthenium compounds containing heterocycle-acetylide are reported here. Ru2(Y-DMBA)4(CC-2-pyrimidine)2 were prepared from the reaction between Ru2(Y-DMBA)4(NO3)2 and HCC-2-pyrimidine in the presence of Et2NH, where Y-DMBA is either N,N′-dimethylbenzamidinate (DMBA, Y = H) or N,N′-dimethyl-(3-methoxy)benzamidinate (Y = 3-CH3O). Ru2(Y-DMBA)4(CC-4-N-methylpyridinium)2 were obtained through the methylation of known compounds Ru2(Y-DMBA)4(CC-4-pyridine)2. Both the structural and voltammetric data are consistent with the heterocycles being moderate electron acceptors.

Graphical abstractReported herein are the synthesis, electrochemical and structural characterization of Ru2(DMBA)4(CCAr)2 type compounds with Ar as pyrimidine or N-methylpyridinium.Figure optionsDownload full-size imageDownload as PowerPoint slide