Ammonium hexafluorovanadate

Ammonium hexafluorovanadate
Names
	IUPAC name Ammonium hexafluorovanadate
	Other names Ammonium hexafluorovanadate(III); Triammonium vanadium hexafluoride;
Identifiers
CAS Number	13815-31-1;
3D model (JSmol)	Interactive image;
ChemSpider	19995865;
PubChem CID	129647085;
	InChI InChI=1S/6FH.3 H3N.V/h61H;31 H3;/p-3 Key: PURSFTZXXIKJST-UHFFFAOYSA-K;
	SMILES [F-].[F-].[F-].[F-].[F-] .[F-].[V].[NH4+].[NH 4+].[NH4+];
Properties
Chemical formula	F6H12N3V
Molar mass	219.049 g·mol−1
Appearance	green solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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

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]

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]

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
↑ 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.
↑ 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.
↑ 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.