Ammonium hexafluorogallate is an inorganic chemical compound with the chemical formula .
Synthesis A mechanochemical reaction between ammonium fluoride and gallium fluoride trihydrate (·) at a ratio of 3:1 produces the compound.
Also, a reaction of gallium(III) hydroxide, HF, and ammonium fluoride.
Physical properties Ammonium hexafluorogallate occurs in two polymorphic forms: tetragonal at low temperature and cubic at high temperature, with both transforming reversibly.
It has colorless crystals, which are soluble in water.
References