摘要:
Reaction of lithium ferrocenylacetylide with (eta-C5H5)LL'FeI (L = L' = CO, L = L' = P(OMe)3, and L = CO, L' = PPh3) gave the corresponding Fe(II) ferrocenylacetylide complexes, (eta-C5H5)LL'FeCCFc, in moderate yields. (Eta-C5Me5)(CO)2FeCCFc was similarly prepared. In their cyclic voltammograms, all the complexes gave two irreversible waves in acetonitrile. The complexes, when oxidized with various oxidants, showed a broad absorption in the near-infrared region and low frequency-shift of the acetylide group in the IR spectrum. The spectral data suggest that the oxidized complexes are a novel Class II type of mixed-valence complex.