Uranium hexa-fluoride

Uranium enrichment and fuel fabrication For light-water-moderated and light-water-cooled reactors (LWRs) and for advanced gas-cooled graphite moderated reactors (AGRs), the uranium processed at the mills needs to be enriched in the hssile isotope Enrichments of 2-5% are required. Before the enrichment, the uranium oxide (UsOg) must be converted to uranium tetra-fluoride (UF4) and then to uranium hexa-fluoride (UFg). 

Attempts to confirm the existence of platinum difluoride have been unsuccessful. Platinum tetrafluoride has been shown to be diamagnetic when pure. Although it is not isomorphous with any known tetrafluoride it is apparently related structurally to uranium tetrachloride. The quinque-positive oxidation state of platinum has been established in the simple fluoride, the salts potassium hexafluoroplatinate(v) and dioxygenyl hexa-fluoroplatinate(v), and in the adducts ClFj.PtFj and IFj.PtFj. Platinum hexafluoride has been briefly investigated. 

AnXe species are known for fluorides of uranium, neptunium, and plutonium and for UCle. The hexafluorides are volatile compounds obtained by fluorinating Anp4. The highly volatile UFs is the compound used for the large-scale isotope separation of from UCle can be made by the reaction of AICI3 and UFe. The hexa-halides have octahedral geometry. 

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