Three ionic C-60 salts with [Ru(bpY)(3)](m+) (bPY = 2,2'-bipyridine) as cations were synthesized. The UV-vis-NIR spectra, XPS spectra, and elemental analysis have demonstrated their compositions: [Ru(bPY)3]2(C60) (1), [Ru(bpy)(3)](C-60) (2), and [Ru(bpy)(3)](C-60)(2) (3). Single crystals of polycrystalline compounds 1 and 2 were obtained as solvates. At room temperature, all three salts are semiconducting with the highest four-probe conductivity observed for compound 1 at similar to 10 S m(-1). The electronic conduction mechanisms can be described appropriately by an electron hopping model in this immobilized polyvalent redox system.