Synthesis, Spectroscopy and Biological Activities Studies for New Complexes of Some Lanthanide Metals with Schiff's Bases Derived from Dimedone with ۴-Aminoanitpyrine

In this work, new complexes of some lanthanide ions metals, such as (La+۳, Nd+۳, Er+۳, Gd+۳and Dy+۳) with Schiff bases that derived from the antipyrine compound were synthesized. This ligand can be synthesized from condensation dimedone with ۴-aminoanitpyrine in microwave irradiation and were identified using (FT-IR spectroscopy, UV-Visible spectroscopy, CHNO analysis, LC-mass, ۱H-NMR, ۱۳C-NMR and TGA analysis). The complexes were characterized by FT-IR, UV-Visible, CHNO analysis, conductivity measurement, magnetic susceptibility, and theromgravimatric analysis. From stoichiometry of metal to ligand and all measurements was proposed formula of complexes and a molar ratio (۲-۲) (metal – ligand) to give the. The bioactivity of the prepared (L) and its complexes were assessed using antibacterial activity, and the results revealed significant activity against some fungi and bacteria.

Keywords:

lanthanide complexes , ۴-aminoanitpyrine , theromgravimatric analysis , biological activities