FLUORO COMPLEXES OF HEXAVALENT URANIUM .7. FLUOROSULFATO COMPLEXES OF DIOXOURANIUM(VI)

The fluorosulphato complexes K2[U02F2(S04)], (NH4)2[U02(S04)], (NH4)6[(UO2)2F4(SO4)3] and Cs2[(U02)2F4(S04)] have been prepared by crystallising solutions containing U02F2 and ammonium or the alkali metal sulphates. Another ammonium salt, (NH4)[U02F(S04)] has been obtained by the pyrolysis of (NH4)2F2(S04)]. Molecular conductance and ion exchange studies show that the complex ions are decomposed in dilute solution. The IR spectra of the complexes indicate that the sulphate ion acts as a bidentate chelating or briged bidentate group C2v symmetry of sulphate ion The lattice parameters of the potassium and ammonium salts have been reported. © 1979.