14membered macrocyclic complexes of Cr(III), Mn(II), Fe(II), Co(II), Ni(II) and Cu(II) containing tetraoxo octa aza cyclo hexadecane ligand (L = C6H12N8O4) have been isolated by the template condensation of oxalo dihydrazide and formaldehyde in the presence of corresponding metal chloride and characterized by elemental analysis, UVVisible spectroscopic studies, magnetic moments and conductance measurements. The complexes of the type [M(C6H12N8O4)Cl2] [Where M = Mn, Co, Ni and Cu] and [M(C6H12N8O4)Cl2]Cl [M=Cr and Fe] are all octahedral in nature.