Sodium hexafluoroantimonate

Sodium hexafluoroantimonate is an inorganic chemical compound with the chemical formula NaSbF6.

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. 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.