Synthesis and Characterization of a New Tetradentate N-isopentylidine hydrazinedithiocarboxylic methyl ester Schiff Base Ligand for Three Homotrinuclear Metal Complexes

Abstract

The new tetradentate N-isopentylidine hydrazinedithiocarboxylic methyl ester Schiff base ligand (L) was used as stabilizer ligand for the homotrinuclear complexes were prepared by condensation of ammonium hydrazinedithiocarboxylic methyl ester and 3-pentanone and to use them into in-situ reactions with metal chloride salts (M) in 3 : 2 molar ratio (Metal : Ligand) in ethanol solution to yield Schiff base homotrinuclear complexes of the general formula is [M₃(L)₂Cl₂(H₂O)₂] where M refers to Co(II) (1), Ni(II) (2) and Cu(II) (3). The suggested structures of the complexes were characterized by using elemental analysis, molar conductivity, FT-IR and UV-Vis spectroscopy and magnetic susceptibility measurements as well as MM2 theoretical calculations of the complexes studied by using  (CsChem3D Ultra program package) which is identical with the experimental results.