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Ammonium hexafluorogallate

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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/h61H;;31H3/q;;;;;;+3;;;/p-3 Key: VNTODJFLNIRXQJ-UHFFFAOYSA-K
SMILES [NH4+].[NH4+].[NH4+].[F-].[F-].[F-].[F-].[F-].[F-].[Ga+3]
Properties
Chemical formula	F₆GaH₁₂N₃
Molar mass	237.830 g·mol⁻¹
Appearance	colorless crystals
Density	2.10 g/cm³
Solubility in water	soluble
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

Ammonium hexafluorogallate is an inorganicchemical compound with the chemical formula(NH₄)₃GaF₆.^[1]^[2]

Synthesis

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A mechanochemical reaction betweenammonium fluoride and gallium fluoride trihydrate (GaF₃·3H₂O) at a ratio of 3:1 produces the compound.^[3]

Also, a reaction ofgallium(III) hydroxide, HF, andammonium fluoride.^[4]

Ga(OH)₃ + 3 HF + 3 NH₄F → (NH)₃GaF₆ + 3 H₂O^[5]

Physical properties

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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

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^"NCATS Inxight Drugs — AMMONIUM HEXAFLUOROGALLATE". drugs.ncats.io. Retrieved31 August 2024.
^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. Retrieved31 August 2024.
^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. Retrieved31 August 2024.
^Perry, Dale L. (19 April 2016).Handbook of Inorganic Compounds.CRC Press. p. 25.ISBN 978-1-4398-1462-8. Retrieved31 August 2024.
^Brauer, Georg (2 December 2012).Handbook of Preparative Inorganic Chemistry V1.Elsevier. p. 228.ISBN 978-0-323-16127-5. Retrieved31 August 2024.
^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. Retrieved31 August 2024.
^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. Retrieved31 August 2024.

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