Ammonium hexafluoroferrate
| Names | |
|---|---|
| IUPAC name
Triazanium;hexafluoroiron(3-) | |
Other names
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| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| F6FeH12N3 | |
| Molar mass | 223.952 g·mol−1 |
| Appearance | yellow-white crystals |
| Density | 1.96 g/cm3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium hexafluoroferrate is an inorganic compound with the chemical formula (NH4)3FeF6.
Structure
[edit]Ammonium hexafluoroferrate is isomorphous with the analogous compounds of aluminum and trivalent titanium, vanadium, and chromium.[1] It crystallizes in a cubic lattice.[2]
Synthesis
[edit]Ammonium hexafluoroferrate can be obtained by reacting ferric fluoride trihydrate and ammonium fluoride in water.[3]
Reactions
[edit]Upon heating, the compound loses two moles of ammonium fluoride, forming ammonium tetrafluoroferrate(III). Further heating results in the gradual loss of ammonium fluoride, the final products being iron(III) fluoride mixed with oxide.[4][5]
The compound reacts with xenon difluoride to produce NH4FeF4, N2, Xe, and HF.[6]
Uses
[edit]Ammonium hexafluoroferrate is used as a fire retardant.[7]
References
[edit]- ↑ Simons, J. H. (2 December 2012). Fluorine Chemistry V2. Elsevier. p. 20. ISBN 978-0-323-14543-5. Retrieved 22 August 2024.
- ↑ Ryss, Iosif Grigorʹevich (1960). The Chemistry of Fluorine and Its Inorganic Compounds. State Publishing House for Scientific, Technical and Chemical Literature. p. 681. Retrieved 22 August 2024.
- ↑ Slivnik, Jože; Družina, Branko; Žemva, Boris (1 November 1981). "Reactions of Some Ammonium Fluorometalates with XeF 2". Zeitschrift für Naturforschung B. 36 (11): 1457–1460. doi:10.1515/znb-1981-1119.
- ↑ Shinn, Dennis B.; Crocket, David S.; Haendler, Helmut M. (November 1966). "The Thermal Decomposition of Ammonium Hexafluoroferrate(III) and Ammonium Hexafluoroaluminate. A New Crystalline Form of Aluminum Fluoride". Inorganic Chemistry. 5 (11): 1927–1933. doi:10.1021/ic50045a020. ISSN 0020-1669. Retrieved 22 August 2024.
- ↑ Wang, Hong; Zhou, Yuebo; Mo, Chenggang; Zhang, Lina; Cui, Junjun (1 December 2021). "Fluorination of α-Fe2O3 by NH4HF2 to Produce FeF3". Russian Journal of Inorganic Chemistry. 66 (14): 2017–2026. doi:10.1134/S0036023621140060. ISSN 1531-8613. Retrieved 25 August 2024.
- ↑ Slivnik, Jože; Družina, Branko; Žemva, Boris (1 November 1981). "Reactions of Some Ammonium Fluorometalates with XeF 2". Zeitschrift für Naturforschung B. 36 (11): 1457–1460. doi:10.1515/znb-1981-1119.
- ↑ Official Gazette of the United States Patent Office: Patents. The United States Patent Office. 4 January 1972. p. 781. Retrieved 22 August 2024.
Further reading
[edit]- Moriya, Keiichi; Matsuo, Takasuke; Suga, Hiroshi; Seki, Syûzô (1 August 1977). "On the Phase Transition of Ammonium Hexafluoroferrate(III)". Bulletin of the Chemical Society of Japan. 50 (8): 1920–1926. doi:10.1246/bcsj.50.1920. Retrieved 22 August 2024.
- Pebler, Jurgen (January 1985). "Iron(57) Mo¨ssbauer effect and spin correlation time in ammonium hexafluoroferrate(III)". Journal of Solid State Chemistry. 56 (1): 58–65. Bibcode:1985JSSCh..56...58P. doi:10.1016/0022-4596(85)90252-X. Retrieved 22 August 2024.
