Sodium hexafluoroantimonate

Sodium hexafluoroantimonate is an inorganic chemical compound with the chemical formula NaSbF₆.^[1][2][3]

Sodium hexafluoroantimonate

Names
IUPAC name sodium;hexafluoroantimony(1-)
Identifiers
CAS Number	16925-25-0
3D model (JSmol)	Interactive image
ChemSpider	10626272
ECHA InfoCard	100.037.248
EC Number	240-989-8
PubChem CID	16689647
UNII	7JW6105AEM
CompTox Dashboard (EPA)	DTXSID301014504
InChI InChI=1S/6FH.Na.Sb/h6*1H;;/q;;;;;;+1;+5/p-6 Key: HKLMYZVMEYYVBS-UHFFFAOYSA-H
SMILES F[Sb-](F)(F)(F)(F)F.[Na+]
Properties
Chemical formula	NaSbF6
Appearance	colorless crystals
Solubility in water	soluble (slow hydrolysis)
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Sodium hexafluoroantimonate may be synthesised by oxidation of antimony trioxide with bromine trifluoride:

6Sb₂O₃ + 20BrF₃ + 12NaF → 12Na[SbF₆] + 10Br₂ + 9O₂

Or it may be formed by reaction of antimony and sodium fluorides:

SbF₅ + NaF → Na[SbF₆]

Physical properties

Sodium hexafluoroantimonate forms colorless crystals, soluble in water.^[4] It crystallizes in the cubic Pa3 space group with unit cell dimension of a=0.820 Å.

Chemical properties

Sodium hexafluoroantimonate undergoes slow partial hydrolysis in aqueous solutions.^[5]