Ammonium hexafluorovanadate

Last updated
Ammonium hexafluorovanadate
Names
IUPAC name
Ammonium hexafluorovanadate
Other names
  • Ammonium hexafluorovanadate(III)
  • Triammonium vanadium hexafluoride
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
  • InChI=1S/6FH.3 H3N.V/h6*1H;3*1 H3;/p-3
    Key: PURSFTZXXIKJST-UHFFFAOYSA-K
  • [F-].[F-].[F-].[F-].[F-] .[F-].[V].[NH4+].[NH 4+].[NH4+]
Properties
F6H12N3V
Molar mass 219.049 g·mol−1
Appearancegreen solid [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ammonium hexafluorovanadate is an inorganic chemical compound with the chemical formula (NH4)3VF6.

Contents

Synthesis

Ammonium hexafluorovanadate can be prepared the solid state reaction of vanadium trioxide and ammonium bifluoride. [1] [2] Another method involves the solid state reaction of vanadium(III) fluoride with ammonium fluoride. [3]

Reactions

The compound decomposes to vanadium pentoxide if heated in open air: [1]

4(NH4)3VF6 + 11O2 → 2V2O5 + 6N2 + 12H2O + 24HF

An ammonium hexafluorovanadate(V) with the formula NH4VF6 has been reported. [4]

References

  1. 1 2 3 Sturm, B. J.; Sheridan, C. W.; Crayton, P. H.; Vance, R. N. (January 1963), Kleinberg, Jacob (ed.), "Vanadium(III) Fluoride", Inorganic Syntheses, vol. 7 (1 ed.), Wiley, pp. 87–92, doi:10.1002/9780470132388.ch27 , retrieved 2026-02-04
  2. ↑ Wani, B. N.; Rao, U. R. K. (May 1991). "Fluorination of Vanadium Oxides" . Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 21 (5): 779–791. doi:10.1080/15533179108016842 . Retrieved 29 August 2024.
  3. ↑ Kobayashi, Kiyoaki; Matsuo, Takasuke; Suga, Hiroshi; Khairoun, Slimane; Tressaud, Alain (1985-02-01). "Phase transition in ammonium hexafluorovanadate (III)". Solid State Communications. 53 (8): 719–722. doi:10.1016/0038-1098(85)90386-2. ISSN   0038-1098.
  4. ↑ Ẑemva, B.; Slivnik, J.; Milićev, S. (1977-03-01). "On the synthesis of ammonium hexafluorovanadate (V)". Journal of Fluorine Chemistry. 9 (3): 251–254. doi:10.1016/S0022-1139(00)82165-X. ISSN   0022-1139.
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