SYNTHESES, CHARACTERIZATION, STRUCTURE AND REDOX BEHAVIOR OF CIS-[RU(NO)X(BPY)(PY)(2)](Z) (X EQUALS MONODENTATE) TYPE COMPLEXES OF NITROSYLRUTHENIUM(II) AND THEIR RELATED COMPLEXES

Nitrosyl complexes which have both 2,2'-bipyridine and pyridine as co-existing ligands were synthesized and characterized as cis-[Ru(NO)(X)(bpy)(py)(2)](z+) (X = OH, Cl, NO2 for z = 2; X = py for z = 3). Their characteristics were investigated under the conditions of both chemical oxidation and electrochemical reduction, The molecular structure of cis-[Ru(NO) (OH) (bpy) (py)(2)] (PF6)(2) was determined: RuC20N5H19O2P2F12, FW = 752.40, orthorhombic, a = 15.942(2), b = 26.541(4), c = 12.670(5) Angstrom, V = 5360(1) Angstrom(3), space group Pbca, Z = 8, D-calc = 1.864 g cm(-3), D-obs = 1.857 g cm(-3), mu(Mo K alpha) = 8.18 cm-(1), no. of observations (I > 3.00 sigma(I)) = 2232, R = 0.050, R(w) = 0.042. The related nitro and oxo complexes which were obtained from the nitrosyl complexes are also reported.