The reaction of Ph2SbSiMe3 with CpFe(CO)2X (X = Cl, Br) leads to the formation of the diphenyldiferriostibonium salts [CpFe(CO)2}2SbPh2]2FeX4, whereas PhSb(SiMe3)2 and CpFe(CO)2Cl react to give the phenyltriferriostibonium salt [CpFe(CO)2}3Sb]2FeCl4. Sb(SiMe3)3 reacts with CpFe(CO)2X (X = Cl, Br) to yield the halogenotriferriostibonium salts [CpFe(CO)2}3SbX]2FeX4. The chloro derivative can also be obtained: from SbCl3 with CpFe(CO)2}2 or Na[CpFe(CO)2], and from SbCl5 and Na[CpFe(CO)2], The compounds have been characterized by spectroscopic (IR, NMR, MS), analytical (C, H) and X-ray diffraction investigations ([CpFe(CO)2}2SbPh2]2FeBr4, [CpFe(CO)2}3SbPh]2FeCl4, [CpFe(CO)2}3SbCl]2FeCl4).