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| Section2 = }} Uranium pentafluoride is the inorganic compound with the chemical formula UF5. It is a pale yellow paramagnetic solid. The compound has attracted interest because it is related to uranium hexafluoride, which is widely used to produce uranium fuel. It crystallizes in two polymorphs, called α- and β-UF5. ==Synthesis and structure== It can be produced by reduction of the hexafluoride with carbon monoxide at elevated temperatures.〔Gordon W. Halstead, P. Gary Eller "Uranium(V) Fluorides and Alkoxides" Inorganic Syntheses 1982, volume 21, 162. 〕 : 2 UF6 + CO → 2 UF5 + COF2 Other reducing agents have been examined. The α form is a linear coordination polymer consisting of chains of octahedral uranium centers in which one of the five fluoride anion forms a bridge to the next uranium atom. The structure is reminiscent of that for vanadium pentafluoride. In β form, the uranium centers adopt a square antiprismatic structure. The β polymorph gradually converts to α at 130 °C.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Uranium pentafluoride」の詳細全文を読む スポンサード リンク
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