Chelate of furancarbamide (FUR), benzoic acid hydrazide (BAH) and its acetone hydrazone (ABH) with nickel (II) and manganese (II) nitrate have been prepared. The complexes and ligands were characterized by Fourier transform infrared spectra analysis, electronic spectra analyses, conductivity, melting point, and solubility. The FTIR analysis indicated that the ligand (FUR) coordinated with the metal ions through the carbonyl oxygen, the azomethine nitrogen and amine nitrogen, while (ABH) coordinated through the carbonyl oxygen and azomethine nitrogen. The BAH ligand coordinated through carbonyl oxygen and the primary amine nitrogen. This is an indication that the ligands acted as tridentate and bidentate donors to the metal ions. The electronic spectra showed the complexes of Ni with ABH and BAH as octahedral geometry. The conductivity data showed the complexes as non electrolytes. Elemental analysis indicate that the complexes of BAH and ABH formed an M:L2. X type with Ni and Mn formed an ML1 type with ABH. The FUR complex formed with Mn is an ML1.X type complex and ML3 type for Ni.
