Structural studies of biologically active complexes of zinc(II), cadmium(II), mercury(II) and copper(II) with p-anisaldehyde thiosemicarbozone

p-Anisaldehyde thiosemicarbazone (PAT) has been used to isolate the complex compounds of the general formula M(PAT)X₂]H₂O where M(II) = Zn, Hg, Cd and Cu, and X = Cl or $\text{1}\text{2}$SO₄. Probable structures for the complex compounds have been proposed on the basis of elemental analysis, conductometric, spectral and magnetic susceptibility data. The toxicity of the isolated complexes and ligand has been evaluated on pathogenic fungus.