Synthesis and Characterization of Hexaazamacrocyclic Complexes with Co(II), Ni(II), Cu(II), and Zn(II) Derived from Phthalaldehyde and 2,6‐Diaminopyridine
摘要:
A novel family of hexaazamacrocyclic complexes [MLX2] [M = CO(II), Ni(II), Cu(II), and Zn(II), X = Cl or NO3] containing pyridine and imine groups as part of the macrocyclic framework have been synthesized by the condensation of o-phthalaldehyde with 2,6-diaminopyridine in the presence of metal ions as templates in methanol as solvent. The complexes have been characterized on the basis of elemental analyses, IR, H-1 NMR, EPR, UV-Visible, magnetic susceptibility, and conductivity measurements at room temperature. An octahedral geometry has been proposed for all of these complexes. The low conductivity data suggest their non-ionic nature.