Synthesis and Characterization of Tetradentate Macrocyclic Ligands and its Complexes with Some Transition Metal Ions.

Abstract

Complexes of the type [M(L1)Cl2], [M(L2)Cl2] and [M(L3)Cl2] (M=Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II); L1=(5,12-dibromo-2,9-dithioxo-1,3,8,10-tetra azacyclo tetra decane-4,7,11,14-tetraone), L2= (5,6,12,13- tetrabromo-2,9- dithioxo -1,3,8,10- tetraazacyclotetra decane-4,7,11,14-tetraone) and L3= ((5Z, 12Z) - 2,9 – dithioxo -1,3,8,10-tetraaza cyclotetradeca-5,12-diene-4,7,11,14-tetraone) have been prepared and characterized by means of micro analysis (Metals (M)) molar conductance measurements, magnetic susceptibility measurements, IR and electronic spectral studies the prepared complexes may have octahedral configuration.