Ammonium hexafluorochromate

Ammonium hexafluorochromate

Names
Other names Ammonium hexafluorochromate(III)
Identifiers
3D model (JSmol)	Interactive image
SMILES [NH4+].[NH4+].[NH4+].F[Cr-3](F)(F)(F)(F)F
Properties
Chemical formula	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.