Elaboration and characterization of rare earth coordination polymers.

Abstract

This research focuses on the synthesis and characterization of coordination polymers based on rare earth elements, particularly lanthanum(III). Various rigid (aromatic) and flexible (aliphatic) dicarboxylic acid ligands were used in both single- and mixed-ligand systems. The compounds were synthesized using hydrothermal, reflux, and ambient temperature methods and characterised by FT-IR, PXRD, and TGA. The results revealed diverse structural features, coordination modes, and thermal behaviors, influenced by ligand type and reaction conditions. Some compounds showed potential novelty based on diffractogram comparisons. This work enhances understanding of structure-property relationships in rare earth coordination polymers.