Molecule-Bridged Mixed-Valent Intermediates Involving the RuI Oxidation State. Journal of the American Chemical Society, (126)45:14706--14707, 2004. [PUMA: UV arene areneruthenium azobispyridine bridged charge complex complex;redox complex;ruthenium dimer;EPR dimer;cyclic diruthenium iminomethylpyrazine mixed potential prepn spectra transfer transition valence voltammetry]