Potassium hexafluorocuprate(III)



Potassium hexafluorocuprate(III) is an inorganic compound with the chemical formula K3CuF6. It is a green paramagnetic solid, a relatively rare example of a copper(III) compound.

Synthesis and structure
The compound is prepared by oxidizing the mixture of potassium chloride and cuprous chloride with fluorine:
 * 3 KCl + CuCl + 3 F2  →    K3CuF6  +  2 Cl2

A variety of analogues are known. The compound reacts with water easily, producing oxygen and copper(II) products.