Reprint of: Structural, electronic and acid/base properties of [Ru(bpy)(bpy(OH)2)2]2+ (bpy = 2,2′-bipyridine, bpy(OH)2 = 4,4′-dihydroxy-2,2′-bipyridine)

We have synthesized a new Ru2+ polypyridyl complex with readily deprotonatable dihydroxy-bipyridine ligands. Upon deprotonation the ligands donate extensive electron density to the metal center, destabilizing the metal-centered Ru2+ HOMO d orbitals. Studies were carried out using computational methods, X-ray diffraction, cyclic voltammetry, UV-Vis, and luminescence spectroscopy.108