The reaction of 1,1'-bis((n)butylaminomethylene)ferrocene with two equivalents of benzoyl isothiocyanate yields 1,1'-ferrocenediyl-bis(N-methylene-N-(n)butyl-N'-benzoyl thiourea). In contrast, the respective reaction with 1,1'-bis(ethylaminomethylene)ferrocene leads to 2-N-ethylammonium-[3]-1,1'-ferrocenophane thiocyanate. Both compounds are characterized by X-ray structure determination. A possible reaction mechanism is discussed.