Caesium superoxide explained

Caesium superoxide is a chemical compound with the chemical formula . It consists of caesium cations and superoxide anions . It is an orange solid.

Preparation

Burning caesium in excess oxygen will produce caesium superoxide.

Properties

Caesium superoxide's crystal structure is same as calcium carbide. It contains direct oxygen-oxygen bonding.

It reacts with water to form hydrogen peroxide and caesium hydroxide.

Heating to approximately 400 °C induces thermal decomposition to caesium peroxide.^[1]

The standard enthalpy of formation ΔH_f⁰ of caesium superoxide is −295 kJ/mol.^[2]

Caesium superoxide reacts with ozone to form caesium ozonide.

Notes and References

1. Berardinelli . S. P. . Kraus . D. L. . Thermal decomposition of the higher oxides of cesium in the temperature range 320-500.deg. . Inorganic Chemistry . American Chemical Society (ACS) . 13 . 1 . 1974-01-01 . 0020-1669 . 10.1021/ic50131a037 . 189–191.
2. Book: Holleman, Arnold . Anorganische ChemienBand 1 . de Gruyter . Berlin . 2017 . 978-3-11-049585-0 . 968134975 . de.