1318236-72-4Relevant academic research and scientific papers
Synthesis and luminescence properties of the Pr(III), Sm(III), Eu(III), Nd(III), and Yb(III) complexes with propane-1, 3-dione derivatives
Meshkova,Topilova,Matiichuk,Pokhodylo,Kovalevskaya,Rakipov,Doga
, p. 309 - 315 (2011)
The luminescence method, mass spectrometry, and elemental analysis are used to reveal that under optimal conditions (pH 5-8) Ln3+ ions (Ln = Pr, Sm, Eu, Nd, and Yb) with 1-(2-hydroxy-4-meth- ylphenyl)-3-(5-methyl-1-phenyl- 1H-1,2,3-triazol-4-yl)propane-1,3-dione form complexes with the mole ratio Ln : ligand = 2 : 3. According to the IR spectral data, Ln3+ ions coordinate three oxygen atoms of two carbonyl groups and one hydroxyl group. In the IR spectra of the complexes, an intense band at 628.7 cm -1 is assigned to the Ln-O bond vibrations. The X-ray diffraction patterns of the complexes contain no lines corresponding to the ligand. The luminescence intensity of the complexes in the visible spectral range changes in the series Eu(lll)Sm(lll)Pr(III), whereas in the IR region the order is Yb(lll)Nd(III). In all cases, luminescence of the solid complexes is considerably more intense than that of their solutions. Pleiades Publishing, Ltd., 2011.
