Synthesis, Characterization and Applications of Some Lanthanide(III) Complexes with Schiff Base Derived from L-Valine and Vanillin

Three lanthanide complexes of Sm(III), Nd(III) and Dy(III) with Schiff base ligand, potassium 2-((4-hydroxy-3-methoxybenzylidene)amino)-3-methylbutanoate derived from the condensation of vanillin and L-valine have been successfully synthesized by solid-state method. The elemental analysis, and spectral studies, such as CHN analysis, FT-IR & FIR, UV-Visible, HR-MS, TG/DTG analysis, photoluminescent spectra and conductivity measurements, were employed for the comprehensive characterization of these compounds. These data indicate that the synthesized Schiff base ligand act as tridentate (ONO) manner towards the metal ions. Additionally, diverse biological activities such as antimicrobial, antioxidant, antidiabetic, anti-inflammatory and larvicidal activities of the ligand and its lanthanide(III) complexes were analyzed.