SYNTHETIC, SPECTROSCOPIC AND ANTIFUNGAL STUDIES OF COBALT(II), NICKEL(II), COPPER(II) AND ZINC(II) COMPLEXES DERIVED FROM TETRADENTATE THIOIMINATO SCHIFF-BASE LIGANDS AND SOME NITROGENOUS BASE ADDUCTS OF NICKEL(II) COMPLEXES

Transition metal complexes of N,N-1-octylenebis(monothioacetylacetoneimine) (L(2)) with resoective metal chlorides and acetates have been synthesized and characterized by elemental analyses, spectroscopic (TR, H-1 and C-13 NMR and electronic) and magnetic data. Adduct complexes of square planar nickel(II) complexes from the above ligand L(2) and N1N1-hexylenebis(monothioacetylacetoncimine) (L(1)) have been prepared with pyridine, benzimidazole and 8-hydroxyquinoline. Complexes and adduct complexes were screened for their antifungal activities against H. oryzae and R. solani, fungi responsible for damaging local crops, particularly rice and Cajanus cajan.