Dichlorine trioxide

Dichlorine trioxide
Names
	IUPAC name dichlorine trioxide
	Other names chlorine trioxide; chlorine chlorate; chlorine(I,V) oxide
Identifiers
CAS Number	17496-59-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	11514723 ;
PubChem CID	167661;
CompTox Dashboard (EPA)	DTXSID90938601 ;
	InChI InChI=1S/Cl2O3/c1-5-2(3)4 Key: SAUMVKNLVQDHMJ-UHFFFAOYSA-N ; 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
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) 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. The isomer having a structure of OCl–O–ClO would be the theoretical anhydride of chlorous acid.

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