Structural, Magnetic And Fluorescence Characterization Of Europium(Iii) Azomethine Complexes With Asymmetric Ligands

In this work, complexes of europium (III) based on 13-naphthol and phenol were synthesized and inves-tigated by the methods of M?ssbauer spectroscopy, NMR spectroscopy, thermogravimetry, mass spec-troscopy. It was found that the structure of the studied complexes determines the spin state of the central ion. The 13-naphthol-based complex exhibits diamagnetic properties (S = 0), and the complex, where the ligand is phenol-based azomethine, is paramagnetic (S = 3). It was shown that the studied complexes exhibit a broad spectral response upon excitation in the ultraviolet part of the spectrum. ? 2021 Published by Elsevier Ltd.In this work, complexes of europium (III) based on 13-naphthol and phenol were synthesized and investigated by the methods of M?ssbauer spectroscopy, NMR spectroscopy, thermogravimetry, mass spectroscopy. It was found that the structure of the studied complexes determines the spin state of the central ion. The 13-naphthol-based complex exhibits diamagnetic properties (S = 0), and the complex, where the ligand is phenol-based azomethine, is paramagnetic (S = 3). It was shown that the studied complexes exhibit a broad spectral response upon excitation in the ultraviolet part of the spectrum.