Spectroscopic and biochemical studies of chromium(in)and manganese(II)complexes with p-vanillin containing thiosemicarbazone and semicarbazone ligands

摘要

A new series of chromium(III)and manganese(II)complexes with p-vanillin thiosemicarbazone(L1)and p-vanillin semicarbazone(L2)have been synthesized and characterized.The nature of bonding and stereochemistry of the complexes have been deduced from elemental analysis,conductivity measurements,mass,magnetic susceptibility,infrared and electronic spectral studies.On the basis of these spectral studies,an octahedral geometry has been assigned for all the complexes.The antimicrobial activities of the free ligands and their metal complexes were evaluated on different species of phytopathogenic fungi and their biopotency has been discussed.