Abstract

Abstract Mixed-valence copper complexes have not been extensively studied in solution, probably due to their instability in this media. Nevertheless, the study of this type system acquires special relevance in relation to materials science (superconductors) and biochemistry (hemocyanin). The electrochemical feasibility of generating different mixed valence copper complexes has been reported recently.1 In this paper we analyze the changes observed in the electronic spectra during the course of the electrolytic generation of a Cu(I)-Cu(II) complex from the fully reduced [CuI(Br)(bpy)]2 precursor, (bpy = 2,2′bypiridine). The relevance of the results obtained in regard to hemocyanin is discussed.

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