Synthesis and characterization of dinuclear molybdenum(VI) peroxo complexes with aroyl hydrazones

摘要

The reactions of ammonium molybdate with hydrogen peroxide and ethanolic solutions of aroylhydrazones,viz.benzoic acid [l-(Furan-2-yl) methylene] hydrazide (BFMH),benzoic acid [(thiophen-2-yl)methylene] hydrazide (BTMH),benzoic acid [1-(thiophen-2-yl) ethylidene] hydrazide (BTEH),benzoic acid (phenyl methylene) hydrazide (BPMH) and benzoic acid [1-(anisol-3-yl) methylene] hydrazide (BAMH),result in the precipitation of the dinuclear complexes,Mo2O4(O2)2L-L(H2O)4 (where L-L=BFMH,BTMH,BTEH,BPMH and BAMH).The complexes have been characterized by elemental analysis,and studies on conductivity and magnetic susceptibility,IR and electronic spectra,~1H NMR spectra,and TGA/DTA.The dinuclear complexes have been found to preserve the individuality of the molybdenum oxo peroxo core.The complexes exhibit significant in vitro antifungal effects against the Keretolytic fungus as compared to ligands.