Lithium hexafluoroarsenate

Lithium hexafluoroarsenate is an inorganic chemical compound with the chemical formula LiAsF₆.^[1][2][3]

Lithium hexafluoroarsenate

Names
IUPAC name lithium;hexafluoroarsenic(1-)
Other names Hexafluoroarsenate(V) lithium
Identifiers
CAS Number	29935-35-1 Y
3D model (JSmol)	Interactive image
ChemSpider	8012757
ECHA InfoCard	100.045.406
EC Number	249-963-0
PubChem CID	9837036
CompTox Dashboard (EPA)	DTXSID50885465
InChI InChI=1S/AsF6.Li/c2-1(3,4,5,6)7;/q-1;+1 Key: GTZQZEYBOGZTEO-UHFFFAOYSA-N
SMILES [Li+].F[As-](F)(F)(F)(F)F
Properties
Chemical formula	AsF6Li
Molar mass	195.85 g·mol−1
Appearance	powder
Density	g/cm3
Melting point	349
Solubility in water	soluble
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H410
Precautionary statements	P261, P264, P271, P273, P301, P304, P310, P311, P340
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Reaction of arsenic pentafluoride and lithium fluoride in liquid hydrogen fluoride:

LiF + AsF₅ → LiAsF₆

Physical properties

Lithium hexafluoroarsenate forms crystals. It is well-soluble both in water and organic solvents.^[4][5] It forms a crystallohydrate of the composition Li[AsF6]•H2O. Its crystals are of rhombic system.^[6]

Chemical properties

Strong oxidizing and reducing agents as well as strong acids and bases cause violent reactions with lithium hexafluoroarsenate. The decomposition produces hydrogen fluoride, arsenic oxides, and lithium oxide.

Uses

Lithium hexafluoroarsenate can be used in the fabrication of lithium-ion batteries.^[7][8]