Ferrocenylaldimines (Fc-CH=N-R) were prepared by condensation of Schiff base of formylferrocene with polyacenylamines RNH/sub 2/; R=naphthyl, anthracenyl and pyrenyl groups. This step was followed by oxidation with FeCl/sub 3/ to give [ Fc-CH=NR ] - FeCl/sub 3/ adducts. The electronic state of iron in these adducts was investigated by means of /sup 57/Fe Mossbauer spectra except for [ Fc-CH=N-Pyr ] -FeCl/sub 3/ showed that only a doublet was observed at ambient temperature. As the temperature was decreased below 200K, additional magnetic hyperfine splitting was observed characteristic of ferric oxide.
Journal of the Chinese Chemical Society=中國化學會會誌 40(4), pp.355-359