A series of neutral and oxidized π-bridged biferrocenes (Fc－x－Fc) and biferrocenylenes (FC(－x－)2Fc) (x=－CH=CH－, －CH3C=CCH3－) were prepared and their physical properties have been studied by means of Mossbauuer and cyclic voltammetry. The electrode reaction of these bridged ferrocene derivatives appears to involve a consecutive two-step oxidation process. The results also show that the voltage difference between the first and second oxidaton potentials of the bridged biferrocenes was found to be largely exceeded that founded for the corresponding the bridged biferrocenylenes. The Mossbauer date show that the oxidation of doubly bridged Fc(－x－)2Fc with iodine, DDQ, and TCNQ given the corresponding deoxidized salts only and stable mixed-valence compounds were found.
中國化學會會誌=Journal of the Chinese Chemical Society 31(1)，頁9-14