Synthesis, spectral, gamma ray irradiation, surface morphology and thermal studies of some RuIII complexes of an azo dye derived from 4-aminoantipyrine

Synthesis of some novel Ru-III complexes with an azo dye methoxyphenolazoantipyrine (HL) derived from 4-aminoantipyrine and 2-methoxyphenol are reported. The complexes have been characterized by elemental analyses, molar conductance, magnetic susceptibility data, IR, UV-Vis, EPR and FAB mass spectral studies. The physico-chemical studies and spectral data indicate that HL acts as a bidentate chelating ligand. The effect of gamma ray irradiation on the thermal behaviour and the surface morphology of a selected complex [RuCl3(PPh3)(HL)] (I) was studied. The electrochemical behaviour of the complex (I) was investigated by cyclic voltammetry. All the complexes are found to be neutral and an octahedral geometry has been tentatively proposed. The ligand HL and complexes were screened for their in vitro antimicrobial activity. The 3D molecular modeling and analysis of bond lengths and bond angles have been carried out for the complex (I).