Hexafluorostannate

Hexafluorostannate refers to an anion with the chemical formula [SnF6]2−. This anion is a component of various salts, most commonly alkali metal salts like sodium hexafluorostannate (Na2SnF6) or potassium hexafluorostannate (K2SnF6). These compounds are typically crystalline solids and are formed by the reaction of tin(IV) fluoride or tin(IV) oxide with hydrofluoric acid in the presence of a metal fluoride.

Hexafluorostannate compounds find applications in several areas. They can be used as fluxes in metallurgy, particularly in soldering and brazing, due to their ability to dissolve metal oxides. Some hexafluorostannates have also been explored for their potential as flame retardants and in the synthesis of other tin-containing materials. The stability and reactivity of hexafluorostannate compounds depend on the specific cation they are associated with. They are generally soluble in water, though solubility varies. In solution, the hexafluorostannate anion is relatively stable.