Lanthanide(III) Complexes of 2-(N-Salicylideneamino)-4-Phenylthiazole

Abstract

Lanthanide(III) complexes of 2-(N-salicylideneamino)-4-phenylthiazole (HSAT) have been synthesized and characterized by elemental analytical, thermogravimetric, molar conductance, UV-visible, IR and NMR spectral data. The ligand coordinates to the lanthanide (III) ion in a tridentate fashion without deprotonation, giving complexes of the type [Ln(HSAT)₂(NO₃)₃] and [Ln(HSAT)₂(H₂O)₃Cl₃]. The spectral data reveal that the ligand is
bonded to the lanthanide ion through azomethine nitrogen, ring
nitrogen and phenolic oxygen without deprotonation. The nitrate
group acts in a bidentate fashion. The ligand and the metal complexes
exhibit antibacterial and antifungal activities.