Neptunyl fluoride

Neptunyl fluoride (Np02F2) is a pink solid prepared by the reaction of the hydrated trioxide with gaseous HF and by direct fluorination of Np205 at 350°C or NpC>3 H20 at 225°C (208, 220). Plutonyl fluoride (Pu02F2) is prepared by the hydrolysis of PuF6 in aqueous solution (272) or in moist air (273) and by the reaction of Pu02Cl2 with anhydrous HF (274). It is a white solid, isomorphous with U02F2 and forms the dihydrate readily. 

Anhydrous neptunyl fluoride, previously obtained by fluorinating sodium neptunyl acetate (52), is more conveniently made by treating Np03 H2O with liquid bromine trifluoride at room temperature, hydrogen fluoride at 300 °C., or fluorine at 230 °C., and even by vacuum drying a hydrofluoric acid solution of NpO ] H2O (12), from which it appears... 

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