NEW DINUCLEAR ASYMMETRIC COMPLEXES OF RUTHENIUM AND RHENIUM
Titel:
NEW DINUCLEAR ASYMMETRIC COMPLEXES OF RUTHENIUM AND RHENIUM
Auteur:
Fagalde, Florencia Katz, NeStor E.
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 54 (2001) nr. 3-4 pagina's 367-377
Jaar:
2001-11-01
Inhoud:
New dinuclear asymmetric complexes of ruthenium and rhenium, of formula [(bpy)(CO)3 ReI(4,4'-bpy)RuII/III(NH3)5]3+/4+ have been prepared and characterized by spectroscopic and electrochemical techniques. In the mixed-valent species [ReI, RuIII], the back electron transfer reaction RuII → ReII, that occurs after light excitation, is predicted to be in the Marcus inverted region. This fact is consistent with the observed quenching of the luminiscence of the Re chromophore in [(bpy)(CO)3ReI(4,4'-bpy)RuIII(NH3)5]4+, when compared to the parent complex [(bpy)(CO)3ReI(4,4'-bpy)]+. A theoretical treatment due to Creutz, Newton and Sutin has been successfully applied to predict the electronic coupling element in the mixed-valent complex.
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