Dichlorine trioxide

Dichlorine trioxide

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Names
IUPAC name dichlorine trioxide
Other names chlorine trioxide chlorine chlorate chlorine(I,V) oxide
Identifiers
CAS Number	17496-59-2 N
ChemSpider	11514723 Y
Jmol 3D model	Interactive image
PubChem	167661
InChI InChI=1S/Cl2O3/c1-5-2(3)4 Y Key: SAUMVKNLVQDHMJ-UHFFFAOYSA-N Y InChI=1/Cl2O3/c1-5-2(3)4 Key: SAUMVKNLVQDHMJ-UHFFFAOYAS
SMILES ClOCl(=O)=O
Properties
Chemical formula	Cl2O3
Molar mass	118.903 g/mol
Appearance	dark brown solid
Melting point	explodes below 0 °C
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Dichlorine trioxide, Cl₂O₃, is a chlorine oxide. It is a dark brown solid discovered in 1967 which is explosive even below 0 °C. It is formed by the low-temperature photolysis of ClO₂ and is formed along with Cl₂O₆, Cl₂ and O₂. Its structure is believed to be OCl-ClO₂ with possible isomers such as Cl-O-ClO₂. It is the theoretical anhydride of chlorous acid.