Synthesis, Characterization, Electrochemical Investigation and Antibacterial Activity of Chiral 1, 1� - (4, 6 - Dihydroxy - 1, 3 -Phenylene) Bisethanone based 18 --Membered Tetraaza Macrocyclic Co (II), Ni (II), Cu (II) and Zn (II) Metal Complexes

Abstract

A template synthesis of 18-membered tetraaza macroyclic ligand and this ligand were complexes with cobalt, nickel, copper and zinc metals chlorides. These synthesized complexes were characterized by various physicochemical methods such as elemental analysis, molar conductance, magnetic properties, spectral studies of infra-red, electronic spectrum, the redox properties of metal complexes were determined in the cyclic voltammetry and antibacterial activity. This research studies were clarifies the structure of the metal complexes were using with spectral data and molar conductance of the complexes. The structure of Co (II), Ni (II) and Cu (II) transition metal complexes was octahedral and Zn (II) complex was tetrahedral. These transition metal complexes were coordinated through the four nitrogen atoms of the ligand. The molar conductance studies revealed that Co (II), Ni (II) and Cu (II) complexes were non-ionic (1:0) and Zn (II) complex was ionic (1:2) in nature. The invitro antibacterial activity method exhibited all the complexes were good antibacterial activities.