| Abstract
| - The mixed-valent state of the trinuclear complex belongs to class I in the classification of Robin and Day.
- We report in this contribution the isolation and characterization of a new redox-active “(η2-dppe)(η5-C5Me5)FeC⋮C-4-(C6H4)−” complex bearing a (2-pyridyl)aldimine site on the aryl ring. This new metalloligand, which was isolated by an unusual synthetic route from the known amino precursor complex, wasstructurally characterized. In accord with its “metallo ligand” denomination, we show here that it readilyreacts with several Cu(I) precursors to form selectively, in good yields, complexes similar to those obtainedwith the corresponding organic N-aryl-(2-pyridyl)aldimines. By this method, a new dinuclear Fe(II)/Cu(I) complex and a new trinuclear Fe(II)/Cu(I)/Fe(II) complex were obtained in a straightforward wayand characterized. The solid-state structure of the latter complex was also determined. Subsequently, theredox congeners of these closed-shell compounds were generated in situ by oxidation and the electronicstructures of the open-shell parents were briefly investigated by infrared, ESR, and UV/vis spectroelectrochemistry. For instance, we conclusively show here that the mixed-valent (MV) state of the trinuclearcomplex belongs to class I in the classification of Robin and Day.
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