Ammonium hexafluorochromate

Ammonium hexafluorochromate
Names
Other names
Ammonium hexafluorochromate(III)
Identifiers
3D model (JSmol)
  • [NH4+].[NH4+].[NH4+].F[Cr-3](F)(F)(F)(F)F
Properties
CrF6H12N3
Molar mass 220.104 g·mol−1
Appearance green crystals
Density g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ammonium hexafluorochromate is an inorganic chemical compound with the chemical formula (NH4)3CrF6.[1]

Physical properties

Ammonium hexafluorochromate forms crystals of cubic system, space group F43m.[2][3]

Chemical properties

When heated, ammonium hexafluorochromate decomposed directly to the pure chromium(III) fluoride.[4][5]

[NH4]3[CrF6] → CrF3 + 3 NH3 + 3 HF

References

  1. ^ "Ammonium hexafluorochromate(iii)". NIST. Retrieved 23 August 2024.
  2. ^ Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables. American Crystallographic Association. p. 948. Retrieved 23 August 2024.
  3. ^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 239. Retrieved 23 August 2024.
  4. ^ Bukovec, P.; Šiftar, J. (1 May 1974). "Zur Kenntnis der thermischen Zersetzung von Ammoniumhexafluoroscandat,-titanat,-vanadat und-chromat". Monatshefte für Chemie / Chemical Monthly (in German). 105 (3): 510–516. doi:10.1007/BF00912602. ISSN 1434-4475. Retrieved 23 August 2024.
  5. ^ Menz, D. -H.; Bentrup, U. (1 September 1991). "Thermal decomposition of ammonium fluorochromates". Journal of Fluorine Chemistry. 54 (1): 174. doi:10.1016/S0022-1139(00)83684-2. ISSN 0022-1139. Retrieved 23 August 2024.
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