Synthesis and characterization of N6 macroacyclic Schiff-base ligand contaning piperazine moiety and its Mn (II) complex

In this report we have synthesized one macroacyclic Schiff-base ligand L with the N6 donor system from condensation of 2-formylpyridine and 2,2 -(piperazine-1,4-diylbis(methylene))dianiline (A). IR spectrum of ligand exhibited a υ(C=N) vibration in 1634 cm-1. The elemental analysis, 1H and 13C NMR and the presence of a peak at 474m/z in the mass spectrum of ligand (L) confirm the synthesis of ligand. The Mn (II) complex was synthesized by direct reaction of manganese (II) metal ion and ligand L. Inthe IR spectrum, υ(C=N) of the complex appears in the 1617 cm-1, and also in mass spectrum of complex the presence of peak at 728 m/z confirms the synthesis of complex.The elemental analysis confirms the synthesis of complex [1-2].