Xenic acid
Xenic acid is a noble gas compound formed by the dissolution of xenon trioxide in water. Its chemical formula is H2XeO4. It is a very powerful oxidizing agent, and its decomposition is dangerous as it liberates a large amount of gaseous products: xenon, oxygen, and ozone. However, this feature is also what makes xenic acid practically useful in syntheses: there is no chance of introducing impurities to the oxidation products, as all the byproducts can be trivially evaporated.
Xenic acid has been used as an oxidizing agent in organic chemistry.
Salts of xenic acid are called xenates, containing the anion. They tend to disproportionate into xenon gas and perxenates:
The energy given off is sufficient to form ozone from diatomic oxygen:
Salts containing the completely deprotonated anion are presently unknown.
