Synthesis and Characterization of Light Lanthanide Complexes with 5‐Aminosalicylic Acid

Abstract

Five new rare earth complexes [RE(L)₂(H₂O)]₂Cl₂ · 2H₂O [RE(III) = La, Pr, Nd, Sm, Eu] have been synthesized with the ligand 5‐aminosalicylic acid. Their properties have been studied on the basis of microanalyses, molar conductance, magnetic susceptibility, IR, UV‐Vis, ¹H NMR spectra, and thermal analyses.

Keywords:

• Lanthanide complexes
• 5‐Aminosalicylic acid

Acknowledgments

This project was supported by the National Natural Science Foundation of China and by the Henan Natural Science Foundation (2000150035). We are thankful to the Assaying and Testing Center, Henan Normal University, for elemental analyses, infrared spectra, electronic spectra, and ¹H NMR spectra.