Potassium hexafluoroantimonate

Potassium hexafluoroantimonate is an inorganic chemical compound with the chemical formula KSbF6.

Synthesis
Potassium hexafluoroantimonate can be prepared by reacting potassium pyroantimonate K2H2Sb2O7 with hydrogen fluoride or by treating the product of the reaction of a mixture of solid antimony(III) oxide and potassium hydroxide with hydrogen peroxide solution (30%) with hydrochloric acid (48%).

Also, the compound can be prepared by reacting antimony pentafluoride and potassium hexafluoromanganate.
 * SbF5 + K2MnF6 -> 4KSbF6 + 2MnF3 + F2

Uses
Potassium hexafluoroantimonate is used as a pharmaceutical intermediate.

Chemical properties
Potassium hexafluoroaluminate can cause violent reactions with strong acids and oxidizing agents.