On forms of U(4) existence in fluoride solutions

The values of thermodynamic and concentration constants for I=0.12 are calculated on the basis of the values of the concentration constants of U(4) complexing with fluoride-ion, presented in literature, using the equations of Vasil'ev, Davies, Van Panthaleon- Van Eck. For the ionic force the ion compositions of U(4) solutions at different equilibrium concentrations of F- in the solution are calculated. Higher yields of the complexes with even number of fluorine ions and considerable role of the anionic fluoride complexes of U(4) are shown