Long-distance intervalence electron transfer

Long-distance intervalence electron transfer can be monitored by the quantitative study of intervalence transitions in series of binuclear mixed-valence metal complexes, with metal-metal distances reaching 25 Angstrom. This allows the determination of the electronic coupling V-ab, and its rate of decay with distance. Comparisons are made between several series of compounds, and also with organic mixed-valence systems. The decay is exponential with a coefficient varying in a relatively narrow range (0.08 to 0.12 Angstrom (-1)). Applications for molecular switching are discussed.