A novel series of 16-membered binuclear complexes of octaazatetraimine ligand, ½M 2 LX 4 [M = Mn II , Co II , Ni II , Cu II and Zn II ; X = Cl or NO 3 ] have been synthesized by metal template condensation reactions of o-phenylenediamine with N,N¢-diacetylhydrazine in 1:1:1 molar ratio in methanol. The proposed stoichiometry and the bonding of the macrocyclic moiety to metal ions along with the overall stereochemistry have been derived from the results of elemental analyses, magnetic susceptibility, conductivity data and the spectral data revealed from FT-IR, 1 H-NMR , ESI mass, UV-visible studies. An octahedral geometry has been envisaged for Mn II , Co II , and Ni II complexes while a slight distortion in octahedral geometry has been noticed for Cu II complexes. The low conductivity data of all the complexes suggest their non-ionic nature.