Complex formation of REEs with polydentate organic ligands
The complex formation of europium and terbium with polyfunctional organic compounds: β-diketones, organic acids were investigated. The composition of the complexes was studied by extractive method, infrared and luminescent spectroscopy. It was established that during the extraction of REE by mixed extractants there is an effective complex formation of REE in the organic phase. The possibility of synthesis of different ligand coordination compounds of REE from saturated extracts was shown and individual crystalline complexes were isolated.