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Ammonium hexafluorogallate

Names
IUPAC name triazanium;gallium;hexafluoride
Other names Triammonium hexafluorogallate(3-)
Identifiers
CAS Number	14639-94-2
3D model (JSmol)	Interactive image
ChemSpider	32697638
PubChem CID	73425411
UNII	4X2AHU48WW
CompTox Dashboard (EPA)	DTXSID50721652
InChI InChI=1S/6FH.Ga.3H3N/h6*1H;;3*1H3/q;;;;;;+3;;;/p-3Key: VNTODJFLNIRXQJ-UHFFFAOYSA-K
SMILES .........
Properties
Chemical formula	F6GaH12N3
Molar mass	237.830 g·mol
Appearance	colorless crystals
Density	2.10 g/cm
Solubility in water	soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Ammonium hexafluorogallate is an inorganic chemical compound with the chemical formula (NH₄)₃GaF₆.

Synthesis

A mechanochemical reaction between ammonium fluoride and gallium fluoride trihydrate (GaF₃·3H₂O) at a ratio of 3:1 produces the compound.

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

Ga(OH)₃ + 3 HF + 3 NH₄F → (NH)₃GaF₆ + 3 H₂O

Physical properties

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

Colorless crystals, soluble in water.

References

1. "NCATS Inxight Drugs — AMMONIUM HEXAFLUOROGALLATE". drugs.ncats.io. Retrieved 31 August 2024.
2. Lide, David R. (29 June 2004). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. p. 4-41. ISBN 978-0-8493-0485-9. Retrieved 31 August 2024.
3. Lu, Jinfeng; Zhang, Qiwu; Wang, Jun; Saito, Fumio (September 2004). "Mechanochemical Synthesis of Ammonium Hexafluorogallate". Journal of the American Ceramic Society. 87 (9): 1814–1816. doi:10.1111/j.1551-2916.2004.01814.x. ISSN 0002-7820. Retrieved 31 August 2024.
4. Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds. CRC Press. p. 25. ISBN 978-1-4398-1462-8. Retrieved 31 August 2024.
5. Brauer, Georg (2 December 2012). Handbook of Preparative Inorganic Chemistry V1. Elsevier. p. 228. ISBN 978-0-323-16127-5. 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. Retrieved 31 August 2024.
7. Grushko, Ya M. (10 September 2020). Handbook of Dangerous Properties of Inorganic And Organic Substances in Industrial Wastes. CRC Press. p. 79. ISBN 978-1-000-11164-4. Retrieved 31 August 2024.

• Fluoro complexes
• Ammonium compounds
• Fluorometallates
• Hexafluorides