Caesium permanganate is the permanganate salt of caesium, with the chemical formula .
Caesium permanganate can be formed by the reaction of potassium permanganate and caesium nitrate:
Caesium permanganate is soluble in water with a solubility of 0.97 g/L at 1 °C, 2.3 g/L at 19 °C, and 12.5 g/L at 59 °C. Its crystal structure is orthorhombic,[1] the same as rubidium permanganate, ammonium permanganate and potassium permanganate.
Similar to potassium permanganate, the two-step decomposition of caesium permanganate leads to the formation of caesium manganate intermediates. It breaks down into manganese dioxide, caesium oxide and oxygen.[2] The decomposition temperature is between 200 and 300 °C. Drift-away oxygen caused an 8% mass loss in the product.
Total reaction: