Palladium(II) thiohydrazone complexes: synthesis, spectral characterization and antifungal study

Palladium(II) complexes of type [Pd(L)Cl-2] [where, L = benzaldehyde-1,1-diphenyl-2- thiohydrazone (L-1), salicylaldehyde-1,1-diphenyl-2-thiohydrazone (L-2), acetaphenone1,1- diphenyl-2-thiohydrazone (L-3) and cyclohexanone-1,1-diphenyl-2-thiohydrazone ( L 4)] have been synthesized. The thiohydrazones can exist as thione- thiol tautomers and coordinate as a bidentate N-S ligand. The ligands are found to be monobasic bidentate. The complexes have been characterized by elemental analysis, IR, mass, electronic, H-1 NMR spectroscopic studies. In vitro antifungal studies against fungi Aspergillus fumigatus, Aspergillus flavus and Aspergillus niger for some complexes have also been carried out.