The relationship between the structure and electron-vibrational spectra of europium compounds with tetrahedral ligands

The relationship between intensities of electron-vibrational (EV) satellites in luminescence spectra and the type of the coordination of ligands is shown on the example of yttrium and gadolinium phosphates, and calcium tungstate activated by europium. The study of EV spectra enhances possibilities of the luminescence probe method. Using EV spectra the symmetry of position of multiatomic ligands and the type of their connection may be stated