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Lowest excited triplet states in [Ru(bpy)₃]²⁺ and [Rh(bpy)₃]³⁺. A comparative study based on highly resolved spectra

Humbs, W. ; Strasser, J. ; Yersin, Hartmut


The lowest excited states of [Ru(bpy)₃]²⁺ (bpy: 2,2’-bipyridine) exhibit a very strong involvement of metal 4d orbitals, while the metal character is extremely small in the states of [Rh(bpy)₃J³⁺. This contrasting behavior is clearly displayed in the emission and excitation spectra, when ligands are isotopically marked. It is demonstrated that these states, being of metal-to-ligand charge ...


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