Eu (III) ION COMPLEXATION IN MOLTEN ALKALI FLUORIDE SOLUTIONS

Sperctral research of molten EuF3-MF (M=Li, Na, K, Cs) was performed. The samples were prerepared using zone molten alkali fluorides. Absorption spectra were mesured using samples with the same amount of EuF3. The behavior of hypersensitive and common f-f transition bands was described. Absorbtion bands correspond to f-f transitions in EuF6 3- groups. The composition of EuF6 3- group second coordination sphere depends on solvent alcali cation type.Работа выполнена в рамках исполнения государственного задания № 0396-2015-0077 с использованием оборудования ЦКП «Урал-М»