Synthesis And Study of New Metal Complexes Derived From 1-[2-(1,3- Benzothiazol-2-Yl Thio) Acetyl]-3-Methyl 2-Pyrazolin-5-one

Abstract

The ligand 1-[2-(1,3-benzothiazol-2-yl-thio)acetyl]-3-methyl-2-Pyrazolin-5-one was
synthesized by the reaction of 2-mercapto benzothiazol with ethyl chloro acetate in an
ethanolic solution . The product was reacted with hydrazine in the same solution and the
product reacted with ethyl aceto acetate. The complexes of this ligand have been
synthesized from the reaction of the ligand with the metal ions [Mn(II),Co(II),Ni(II),
Cu(II), Zn(II), Cd(II) and Pt(IV)].Elemental analysis (C.H.N), FT-IR, UV-Visible
spectroscopy, atomic absorption , magnetic susceptibility, molar ratio and molar
conductance measurements have been determined. Metal to ligand [M:L] ratio obtained
for all complexes in ethanol using molar ratio method , Evidence from IR spectra shows
that in all the complexes the ligand is coordinated Via the pyrazolin nitrogen, and exo
cyclic sulfer m oxygen atom.