Английская Википедия:Chromium hexafluoride

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Версия от 18:57, 18 февраля 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} <!-- Do not add a chembox as the compound does not exist. --> '''Chromium hexafluoride''' or '''chromium(VI) fluoride''' (CrF<sub>6</sub>) is a hypothetical chemical compound between chromium and fluorine with the chemical formula CrF<sub>6</sub>. It was previously thought to be an unstable yellow solid decomposing at −100 °C,<ref>{{cite journal|doi=10.1021/ic00026...»)
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Chromium hexafluoride or chromium(VI) fluoride (CrF6) is a hypothetical chemical compound between chromium and fluorine with the chemical formula CrF6. It was previously thought to be an unstable yellow solid decomposing at −100 °C,[1] but this has been shown to be a misidentification of chromium pentafluoride, CrF5.[2]

Unsuccessful attempts at synthesis

CrF6 used to be thought to be produced by exhaustive fluorination of chromium metal at 400 °C and 20 MPa 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.

References

Шаблон:Reflist

Шаблон:Hexafluorides Шаблон:Chromium compounds Шаблон:Fluorine compounds


Шаблон:Hyp-chem-compound-stub Шаблон:Inorganic-compound-stub

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  1. ↑ Шаблон:Cite journal
  2. ↑ Шаблон:Cite journal
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