Preparation and Characterization of U2O2F7

Article abstract of DOI:10.1246/bcsj.60.3189

Reaction of UO2F2 with UF5 at 400 deg C under UF6-pressure of 3 atm followed by evaporation of excess UF5 has yielded a greenish white residue.Its X-ray diffraction pattern and infrared spectrum are sufficiently unique to establish that this material is a true compound.Its chemical formula has been shown to be U2O2F7, on the grounds of chemical analysis and thermal decomposition.The oxygen content was determined directly by means of 18O isotopic dilution method based on the combustion of the samples with BrF5.