Hexafluorotitanic acid

Hexafluorotitanic acid is an inorganic compound with the chemical formula . According to X-ray crystallography, the salt consists of ^2- octahedral and two kinds of oxonium cations, ⁺ and ⁺.
As with most oxonium salts, it is only stable in acidic solution. Under basic conditions, closely related salts hydrolyse to a hydrated titanium dioxide:
A related salt is the anhydrous fluoronium hexafluoridotitanate or ₂.