AbstractComplexes of iron(II) dichloride with monoacetyl and 1, 1′‐diacetylferrocence thiosemicarbazone have been prepared and characterized by means of optical spectra and magnetic measurement, and these structures have been investigated by Mössbauer spectra. It is inferred that the structures for iron(II) complexets of monoacetylferrocence thiosemicarbazone and 1, 1′‐diacetylbis (thiosemicarbazone) are monomer and polymer resp