Aqua­bis(3-meth­oxy-2-pyridonato)­(2,2':6',2''-terpyridine)ruthenium(II)-acetonitrile-water (1/1/1)

The title compound, [Ru(C₆H₆NO₂)₂(C₁₅H₁₁N₃)(H₂O)]·CH₃CN·H₂O, is a transfer hydrogenation catalyst supported by nitro­gen-donor ligands. This octa­hedral Ru^II complex features rare monodentate coordination of 3-meth­oxy-2-pyridonate ligands and inter­ligand S(6)S(6) hydrogen bonding. Comparison of the title complex with a structural analog with unsubstituted 2-pyridonate ligands reveals subtle differences in the orientation of the ligand planes.