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|Section3= | Coordination = | LattConst_a = 1263 pm | LattConst_c = 604.9 pm }} |Section8= }} Manganese tetrafluoride, MnF4, is the highest fluoride of manganese. It is a powerful oxidizing agent and is used as a means of purifying elemental fluorine.〔〔.〕 ==Preparation== Manganese tetrafluoride was first unequivocally prepared in 1961 by the reaction of manganese(II) fluoride (or other MnII compounds) with a stream of fluorine gas at 550 °C: the MnF4 sublimes into the gas stream and condenses onto a cold finger.〔〔.〕 This is still the commonest method of preparation, although the sublimation can be avoided by operating at increased fluorine pressure (4.5–6 bar at 180–320 °C) and mechanically agitating the powder to avoid sintering of the grains.〔〔.〕 The reaction can also be carried out starting from manganese powder in a fluidized bed.〔.〕〔.〕 Other preparations of MnF4 include the fluorination of MnF2 with krypton difluoride,〔.〕 or with F2 in liquid hydrogen fluoride solution under ultraviolet light.〔.〕 Manganese tetrafluoride has also been prepared (but not isolated) in an acid–base reaction between antimony pentafluoride and K2MnF6 as part of a chemical synthesis of elemental fluorine.〔.〕 :K2MnF6 + 2 SbF5 → MnF4 + 2 KSbF6 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「Manganese(IV) fluoride」の詳細全文を読む スポンサード リンク
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