Abstract
Two stereoisomers of cis-[Ru(bpy)(pynp)(CO)Cl]PF 6 (bpy = 2,2′-bipyridine, pynp = 2-(2-pyridyl)-1,8-naphthyridine) were selectively prepared. The pyridyl rings of the pynp ligand in [Ru(bpy)(pynp)(CO)Cl] + are situated trans and cis, respectively, to the CO ligand. The corresponding CH 3CN complex ([Ru(bpy)(pynp)(CO)(CH 3CN)] 2+) was also prepared by replacement reactions of the chlorido ligand in CH 3CN. Using these complexes, ligand-centered redox behavior was studied by electrochemical and spectroelectrochemical techniques. The molecular structures of pynp-containing complexes (two stereoisomers of [Ru(bpy)(pynp)(CO)Cl]PF 6 and [Ru(pynp) 2(CO)Cl]PF 6) were determined by X-ray structure analyses.
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