A New Heterocyclic Schiff Base and Its Metal Complexes

Abstract

Cu(II), Co(II), Ni(II), and Zn(II) metal complexes of a new SNO tridentate heterocyclic Schiff base derived from the reaction of 1‐amino‐5‐benzoyl‐4‐phenyl‐1H‐pyrimidine‐2‐thione with salicylaldehyde have been synthesized and characterized on the basis of elemental analyses, electronic, IR, and ¹H NMR spectra, and also by molar conductivity measurements, magnetic moment measurements and thermogravimetric analyses (TGA). It has been found that the Schiff base behaves as a neutral tridentate SNO ligand forming chelates with 1:2 or 1:1 (metal:ligand) stoichiometry. The complexes of Co(II), Ni(II), and Zn(II) are proposed to have an octahedral structure, while the Cu(II) complex is suggested to have a square–pyramidal geometry. All of the complexes show nonelectrolytic behavior.

Keywords:

• Synthesis
• Salicylaldehyde Schiff base
• Binuclear complexes
• Pyrimidine‐2‐thione

Acknowledgment

We thank the Research Fund of the Yüzüncü Yıl University for financial support.