Caesium superoxide

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

Structure

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

Preparation

Burning caesium in excess oxygen will produce caesium superoxide.

Reactions

Caesium superoxide reacts with water to form hydrogen peroxide and caesium hydroxide.
Heating to approximately 400 °C induces thermal decomposition to caesium peroxide.
It reacts with ozone to form caesium ozonide.