Synthesis, spectral characterization and redox properties of iron (II) complexes of 1-alkyl-2-(arylazo)imidazole

Iron (II) complexes of 1-alkyl-2-(arylazo)imidazoles (p-R-C6H4-N=NC3H2NN- 1-R´, R = H (a), Me (b), Cl (c) and R´= Me (1/3), Et (2/4) have been synthesized and formulated as tris-chelates Fe(RaaiR ) . 2 3+They are characterized by microanalytical, conductance, UV-Vis, IR, magnetic (polycrystalline state) data. The complexes are low spin in character, 6 2g t (Fe(II)) configurations.