Synthesis, X-ray structures, spectroscopic and electrochemical properties of ruthenium(II) complexes containing 2,2′-bipyrimidine

Ruthenium polypyridyl complexes containing 2,2′-bipyrimidine, [Ru(bpy)2bpm](PF6)2 (I) and [Ru(phen)2bpm](PF6)2 (II), were synthesized with high yield and purity. An extensive characterization was carried out using ESMS, UV–Vis, 1H and 13C NMR, electrochemistry and X-ray single crystal diffraction analysis. The experimental results show that the spectroscopic and electrochemical properties of I and II are similar to those of their parent complexes [Ru(bpy)3](PF6)2 and [Ru(phen)3](PF6)2. This indicates that both I and II can be used as building blocks for the construction of molecular devices.