Metal¿metal interactions in dinuclear ruthenium complexes incorporating ¿stepped-parallel¿ bridging ligands: synthesis, stereochemistry and intervalence charge transfer

• Localización: New journal of chemistry, ISSN 1144-0546, Vol. 30, Nº 2, 2006, págs. 228-237
• Idioma: inglés
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• Resumen

  • The synthesis and separation of the diastereoisomeric forms of the complexes [{Ru(bpy)2}2(μ-BL)]4+ based on the series of “stepped-parallel” bridging ligands 2,5-bis(2-pyridyl)pyrazine (2,5-dpp), dipyrido(2,3-a;2′,3′-h)phenazine (dpop) and azobis(2-pyridine) (apy) are reported. Electrochemical and intervalence charge transfer (IVCT) studies on the complexes reveal a high degree of metal–metal interaction, consistent with a negligible solvent dependence of the IVCT parameters in each case. The results support a Class II–III classification for the systems.