[en] The complex of iron(II) tris(3-Br-phen)(3-Br-phen; 3-bromo-1,10-phenanthroline) was prepared as a precursor of electropolymerization and the crystal structure of [Fe(3-Br-phen)₃](PF₆)₂·CH₃CN with a distorted octahedral geometry has been investigated. The reductive electropolymerization of [Fe(3-Br-phen)₃]²⁺ complex onto the surface of a glassy carbon electrode and indium tin oxide (ITO) optically transparent electrode were performed in acetonitrile at room temperature. Thin film of poly-[Fe(3-Br-phen)₃]²⁺ formed was adherent, electroactive and stably deposited on a glassy carbon disk electrode. The thin metallopolymeric film formed was also confirmed by absorption spectroscopy