Microwave assisted synthesis, characterization and antimicrobial studies of unsymmetric imine complexes of organotitanium(IV) and organozirconium(IV)

摘要

A new class of unsymmelrical oqjanofitaniHin(IV) and oijanozirconiuiriCirV) complexes of biologically potent iigands derived from heterecyclic ketones and semicarbazide hydrochloride and 2-hydraxy-N-phenyl benzamide have been prepared by the microwave irradiations. The Iigands act in monobasic bidentate manner with N∩OH and O∩OH as donor systems. The ligands and the resulting complexes of the type Cp2M(O∩O) (N∩O) (where M represents titanium or zirconium) .are characterized by the elemental analysis, conductance measurements, molecular weight determinations and spectral studies. On the basis of the electronic, IR, ~1H NMR and ~(13)C NMR spectral studies, octahedral geometry has been proposed for the resulting complexes. The isolated products are coloured solids, sotable in imeihanol, DMF, DMSO and THF. A comparative study has been made between microwave assisted synthesis and the thermal synthesis. All the complexes and their parent ligands have been screened against a number of microbes and discussed with positive findings.