Chemistry:Ammonium hexafluorogallate

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Ammonium hexafluorogallate
Names
IUPAC name
triazanium;gallium;hexafluoride
Other names
Triammonium hexafluorogallate(3-)
Identifiers
3D model (JSmol)
ChemSpider
UNII
Properties
F6GaH12N3
Molar mass 237.830 g·mol−1
Appearance colorless crystals
Density 2.10 g/cm3
soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ammonium hexafluorogallate is an inorganic chemical compound with the chemical formula (NH
4
)
3
GaF
6
.[1][2]

Synthesis

A mechanochemical reaction between ammonium fluoride and gallium fluoride trihydrate (GaF
3
·3H
2
O
) at a ratio of 3:1 produces the compound.[3]

Also, a reaction of gallium(III) hydroxide, HF, and ammonium fluoride.[4]

Ga(OH)
3
+ 3 HF + 3 NH
4
F → (NH)
3
GaF
6
+ 3 H
2
O
[5]

Physical properties

Ammonium hexafluorogallate occurs in two polymorphic forms: tetragonal at low temperature and cubic at high temperature, with both transforming reversibly.[6]

It has colorless crystals, which are soluble in water.[7]

References

  1. ↑ "NCATS Inxight Drugs — AMMONIUM HEXAFLUOROGALLATE" (in en). drugs.ncats.io. https://drugs.ncats.io/drug/4X2AHU48WW. 
  2. ↑ Lide, David R. (29 June 2004) (in en). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. p. 4-41. ISBN 978-0-8493-0485-9. https://books.google.com/books?id=WDll8hA006AC&dq=Ammonium+hexafluorogallate&pg=PA14-IA83. Retrieved 31 August 2024. 
  3. ↑ Lu, Jinfeng; Zhang, Qiwu; Wang, Jun; Saito, Fumio (September 2004). "Mechanochemical Synthesis of Ammonium Hexafluorogallate" (in en). Journal of the American Ceramic Society 87 (9): 1814–1816. doi:10.1111/j.1551-2916.2004.01814.x. ISSN 0002-7820. https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/j.1551-2916.2004.01814.x. Retrieved 31 August 2024. 
  4. ↑ Perry, Dale L. (19 April 2016) (in en). Handbook of Inorganic Compounds. CRC Press. p. 25. ISBN 978-1-4398-1462-8. https://books.google.com/books?id=SFD30BvPBhoC&dq=Ammonium+hexafluorogallate&pg=PA528. Retrieved 31 August 2024. 
  5. ↑ Brauer, Georg (2 December 2012) (in en). Handbook of Preparative Inorganic Chemistry V1. Elsevier. p. 228. ISBN 978-0-323-16127-5. https://books.google.com/books?id=kaa2qeFRXmUC&dq=Ammonium+hexafluorogallate&pg=PR11. Retrieved 31 August 2024. 
  6. ↑ Beck, Lynda K.; Haendler Kugler, Blanca; Haendler, Helmut M. (1 December 1973). "The thermal decomposition of ammonium hexafluorogallate and ammonium hexafluoroindate. New crystalline forms of gallium fluoride and indium fluoride". Journal of Solid State Chemistry 8 (4): 312–317. doi:10.1016/S0022-4596(73)80027-1. ISSN 0022-4596. https://www.sciencedirect.com/science/article/abs/pii/S0022459673800271. Retrieved 31 August 2024. 
  7. ↑ Grushko, Ya M. (10 September 2020) (in en). Handbook of Dangerous Properties of Inorganic And Organic Substances in Industrial Wastes. CRC Press. p. 79. ISBN 978-1-000-11164-4. https://books.google.com/books?id=1nf8DwAAQBAJ&dq=Ammonium+hexafluorogallate&pg=PA79. Retrieved 31 August 2024.