Ammonium hexafluorogallate

Ammonium hexafluorogallate
Names
IUPAC name
triazanium;gallium;hexafluoride
Other names
Triammonium hexafluorogallate(3-)
Identifiers
3D model (JSmol)
ChemSpider
UNII
  • InChI=1S/6FH.Ga.3H3N/h6*1H;;3*1H3/q;;;;;;+3;;;/p-3
    Key: VNTODJFLNIRXQJ-UHFFFAOYSA-K
  • [NH4+].[NH4+].[NH4+].[F-].[F-].[F-].[F-].[F-].[F-].[Ga+3]
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).

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

Synthesis

A mechanochemical reaction between ammonium fluoride and gallium fluoride trihydrate (GaF3·3H2O) 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 NH4F → (NH)3GaF6 + 3 H2O[5]

Physical properties

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

Colorless crystals, soluble in water.[7]

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.