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Topic summary

Chlorine perchlorate

Chlorine perchlorate
Names IUPAC name
Chloro perchlorate
Systematic IUPAC name
Chloro perchlorate
Other names
  • Chlorine(I,VII) oxide
  • Dichlorine tetroxide
  • (Chlorooxy)chlorane trioxide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
  • InChI=1S/Cl2O4/c1-6-2(3,4)5
    Key: JRONPIZRZBBOBR-UHFFFAOYSA-N
  • ClO[Cl](=O)(=O)=O
Properties Cl2O4Molar mass134.90 g·mol Appearance Pale green liquid Density1.81 g·cm Melting point−117 °C (−179 °F; 156 K) Boiling point20 °C (68 °F; 293 K) (decomposes) Reacts Hazards Occupational safety and health (OHS/OSH):
Main hazards
oxidizer
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chlorine perchlorate is a chemical compound with the formula Cl2O4. This chlorine oxide is an asymmetric oxide, with one chlorine atom in +1 oxidation state and the other +7, with proper formula Cl−O−ClO3. It is produced by the photodimerization of chlorine dioxide (ClO2) at room temperature by 436 nm ultraviolet light:

2 ClO2 → ClOClO3

Chlorine perchlorate can also be made by the following reaction at −45 °C.

CsClO4 + ClOSO2F → CsSO3F + ClOClO3
Wikipedia source