Chain Compound of Mixed-Valent Ruthenium Dimers Linked by Hydrogen-Bonding between the Axially Coordinated Nitronyl Nitroxide and Water Molecules

An adduct of ruthenium(II,III) dimer with nitronyl nitroxide, [{Ru2(O2CCMe3)4(nitme)2} { Ru2(O2CCMe3)4(H2O)2}]n(BF,) (nitme = 2,4,4,5,5-pentamethyl-4,5-dihydro-lH-imidazolyl-loxyl 3-oxide), which has a chain structure formed by hydrogen bonds between the axial nitme and water molecules, has been prepared and characterized by the X-ray crystallography, magnetic susceptibility, and EPR measurements.