Synthesis, Characterization and Photoluminescence Studies of New Zinc(II) and Zirconium(IV) Complexes Containing Pyridyl Rings

Schiff base ligands are one of the most important electron donors in coordination chemistry. Schiff bases are usually formed by condensation of primary amine and an aldehyde or a ketone [1]. The transition metal complexes of Schiff bases derived from heterocyclic compounds containing nitrogen, sulfur and/or oxygen as ligand atoms are of current interest as simple structural models of biological. Schiff base ligands and their metal complexes have a variety of applications including clinical, analytical, industrial, and organic synthesis. Schiff base metal complexes are also interesting for their contributions in material science such as photochromism, thermochromism, and catalysis such as reduction, oxidation and epoxidation process [2]. In this study new Schiff base complexs of zinc(II) and zirconium(IV), were synthesized using the Schiff base ligand containing 2-aminoethanethiol and a macrocyclic ketone with pyridyl rings and zinc(II) chloride and zirconium(IV) chloride in 1:1 molar ratio.The molar conductivity values of complexes in dichloromethane solvent implied the presence of nonelectrolyte complexes. The fluorescence properties of these complexes were studied. The Schiff base complexes were characterized by FT-IR, 1H NMR, UV/Vis spectroscopies, elemental analysis, and conductometry