Syntheses and Properties of Crosslinked Ferrocene Polymers(Chemistry)

The polycondensation reaction of acetylferrocene and furfural was investigated in the presence of concentrated H_2SO_4 as a catalyst without solvent. Stoichiometric reaction took place with 2 mol of acetylferrocene and 5 mol of furfural. Poly-condensation afforded satisfactory results when 1 mol of acetylferrocene was treated with 2-7 mol of furfural. The structural evidence for these products was derived from chemical and infrared analyses. Density, micro Vickers hardness, magnetic susceptibility, and thermal behavior of these products were measured in comparison with those of other resins

Mossbauer Measurements of Iron Atoms Dispersed in Amorphous Glasslike Carbon

Various iron species have been prepared by pyrolyzing acetylferrocene-furfural resins at 400℃ in vacuum, and analysed by means of Mossbauer spectroscopy. The Mossbauer spectra show that the iron species in an amorphous glasslike carbon matrix are free iron atoms, Fe^+ ions, iron clusters, superparamagnetic irons and ferromagnetic irons