Caesium superoxide

Caesium superoxide
	Caesium cations, Cs+ Superoxide anions, O−2
Identifiers
CAS Number	12018-61-0 ;
3D model (JSmol)	Interactive image;
	InChI InChI=1S/Cs.HO2/c;1-2/h;1H/q+1;/p-1 Key: DZWLBLJPRRQKGB-UHFFFAOYSA-M;
	SMILES [Cs+].[O-][O];
Properties
Chemical formula	CsO2
Molar mass	164.903 g·mol−1
Appearance	Yellow to orange solid
Density	3.77 g/cm3
Melting point	600 °C
Solubility in water	reacts
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−295 kJ/mol
Related compounds
Other anions	Caesium oxide; Caesium peroxide;
Other cations	Lithium superoxide; Sodium superoxide; Potassium superoxide; Rubidium superoxide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Caesium superoxide is a chemical compound with the chemical formula CsO₂. It consists of caesium cations Cs⁺ and superoxide anions O−2. It is an orange solid.

Quick facts Identifiers, Properties ...

Close

Structure

Identifiers
Caesium cations, Cs⁺ Superoxide anions, O−2
CAS Number	12018-61-0^Y
3D model (JSmol)	Interactive image
InChI InChI=1S/Cs.HO2/c;1-2/h;1H/q+1;/p-1 Key: DZWLBLJPRRQKGB-UHFFFAOYSA-M
SMILES [Cs+].[O-][O]
Properties
Chemical formula	CsO₂
Molar mass	164.903 g·mol⁻¹
Appearance	Yellow to orange solid ^[1]
Density	3.77 g/cm³^[1]
Melting point	600 °C^[2]
Solubility in water	reacts
Thermochemistry
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	−295 kJ/mol^[3]
Related compounds
Other anions	Caesium oxide Caesium peroxide
Other cations	Lithium superoxide Sodium superoxide Potassium superoxide Rubidium superoxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references