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Chromium hexafluoride or chromium(VI) fluoride (CrF6) is a hypothetical chemical compound with the chemical formula CrF6. It was previously thought to be an unstable yellow solid decomposing at -100 °C, but this has been shown to be a misidentification of chromium pentafluoride, CrF5. ==Unsuccessful attempts at synthesis== CrF6 used to be thought to be produced by exhaustive fluorination of chromium metal at 400 °C and 20 million pascals of pressure, and immediate freezing out of the reaction chamber to prevent decomposition: :Cr + 3 F2 → CrF6 However, it has been shown that chromium pentafluoride (CrF5) is formed instead: :2 Cr + 5 F2 → 2 CrF5 and that CrF6 has yet to be synthesized. 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「chromium hexafluoride」の詳細全文を読む スポンサード リンク
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