Caesium hexafluorocuprate(IV)

C(a)esium hexafluorocuprate(IV) is an inorganic copper complex with the chemical formula, Cs2CuF6. It is a red solid that rapidly degrades when in contact with water. C(a)esium hexafluorocuprate was the first studied copper (IV) compound.

Synthesis
C(a)esium hexafluorocuprate(IV) is created by heating caesium trichlorocuprate(II) and c(a)esium fluoride to 410°C under 350 atmospheres of fluorine.

Reactions
C(a)esium hexafluorocuprate(IV) reacts violently with water at any temperature.