Divalent Transition Metal Complexes Derived from Thiocarbohydrazide and Dimedone

Abstract

A new series of macrocyclic metal complexes have been synthesized by the template reaction of thiocarbohydrazide and dimedone resulting into the formation of complexes of the type: [M(C₁₈H₂₈N₈S₂)X₂]; where M = Co(II), Ni(II), Cu(II), Zn(II) and X = Cl^–, NO₃^–, CH₃COO^–. The synthesized complexes have been characterized by elemental analyses, conductance measurements, magnetic susceptibility measurements and fluorescence, electronic, infrared, ¹H NMR and mass spectral studies. The in vitro antibacterial activities of these macrocyclic complexes have also been investigated.