Template Syntheses and Characterization of 14-Membered Tetraazamacrocyclic Complexes

Abstract

A new series of 14-membered tetraazamacrocyclic complexes [CuL]X₂, [X = Cl or NO₃] and [MLX₂] [M = Co²⁺, Ni²⁺ and Zn²⁺, X = Cl or NO₃] have been synthesized by template condensation of o-bromoaniline, phthalaldehyde and diaminoethane in ethanol and were characterized by elemental analysis, IR, ¹H NMR, electronic spectral, conductivity as well as magnetic susceptibility measurements. An octahedral geometry is proposed for all the complexes except for copper complexes which were found to be square-planar.