The cobalt(IV) complex of 2,6-diacetylpyridine dioxime (dapdoH 2 ) was prepared and characterized by X-ray diffraction, elemental analysis and FT-IR. The titled complex was found to crystallize in the orthorhombic space group and was screened for antibacterial and antifungal activities by the disc diffusion and microtitter plate techniques using DMF as solvent. It has been found that the antimicrobial activity of the complex [Co(dapdo) 2 ] is slightly higher than the free ligand (dapdoH 2 ).
A complex of Ni II with 2,6-diacetylpyridinedihydrazone (L) towards nickel(II) has been prepared and characterized by means of elemental analyses, IR, electronic spectra and single crystal X-ray analyses. [NiL 2 ](NO 3 ) was crystallized in the tetragonal space group P-4 21 c. The complex exhibits the expected coordination sphere with six nitrogen atoms coordinated to the central Ni II with a deformation from pseudo-octahedral geometry. Antimicrobial activities of the ligand and its complex were investigated.
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