Syntheses, Spectral, Surface Morphological and Gamma Ray Irradiation Studies of Some Oxomolybdenum(V) and Dioxomolybdenum(VI) Complexes of an Azo Dye Derived from 4-aminoantipyrine

Abstract

Syntheses of some novel oxomolybdenum(V) and dioxomolybdenum(VI) 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, <TEX>$^1H$</TEX> NMR, EPR and FAB mass spectral studies. The physicochemical studies and spectral data indicate that HL acts as a bidentate chelating ligand. The complexes have the general formulae [<TEX>$MoO(HL)XCl_2$</TEX>] and [<TEX>$MoO_2(HL)XCl$</TEX>],where X=Cl, NCS or <TEX>$NO_3$</TEX>. All the complexes are found to have distorted octahedral geometry. Structural and morphological characterization of the complexes [<TEX>$MoO(HL)Cl_3$</TEX>](1) and [<TEX>$MoO_2(HL)Cl_2$</TEX>](4) before and after gamma ray irradiation,was performed by X-ray diffraction and scanning electron microscopy( SEM).The ligand and the complexes were screened for their possible antimicrobial activities.