Unusual Monodentate Binding Mode of 2,2‘-Dipyridylamine (L) in Isomeric trans-(acac)2RuII(L)2, trans-[(acac)2RuIII(L)2]ClO4, and cis-(acac)2RuII(L)2 (acac = Acetylacetonate). Synthesis, Structures, and Spectroscopic, Electrochemical, and Magnetic Aspects | Publicación