Formula CrF6 | ||
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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 → CrF6However, it has been shown that chromium pentafluoride (CrF5) is formed instead:
2 Cr + 5 F2 → 2 CrF5and that CrF6 has yet to be synthesized.
References
Chromium hexafluoride Wikipedia(Text) CC BY-SA