Chlorine perchlorate

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Chlorine perchlorate
Dichlorine tetraoxide.svg
Chlorine perchlorate molecule spacefill.png
Names
IUPAC name
Chlorine perchlorate
Systematic IUPAC name
Chloro perchlorate[1]
Other names
Chlorine (I,VII) oxide
Dichlorine tetroxide
Identifiers
27218-16-2 YesY
ChemSpider 147540 N
Jmol 3D model Interactive image
PubChem 168667
  • InChI=1S/Cl2O4/c1-6-2(3,4)5 N
    Key: JRONPIZRZBBOBR-UHFFFAOYSA-N N
  • ClO[Cl](=O)(=O)=O
Properties
Cl2O4
Molar mass 134.90 g·mol−1
Appearance Pale green liquid
Density 1.81 g cm−3
Melting point −117 °C (−179 °F; 156 K)
Boiling point 20 °C (68 °F; 293 K) (decomposes)
Reacts
Vapor pressure {{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

Chlorine perchlorate is the chemical compound with the formula Cl2O4. This chlorine oxide is an asymmetric oxide, with one chlorine atom in oxidation state +1 and the other +7, with proper formula ClOClO3. It is produced by the photolysis of chlorine dioxide at room temperature with 436 nm ultraviolet light:[2][3]

2 ClO2 → ClOClO3

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

CsClO4 + ClOSO2F → Cs(SO3)F + ClOClO3

Chlorine perchlorate is a pale greenish liquid which decomposes at room temperature.

Properties

It is less stable than ClO2 and decomposes to O2, Cl2 and Cl2O6 at room temperature.

2 ClOClO3O2 + Cl2 + Cl2O6

Chlorine perchlorate reacts with metal chlorides forming anhydrous perchlorates:

CrO2Cl2 + 2 ClOClO3 → 2 Cl2 + CrO2(ClO4)2
TiCl4 + 4 ClOClO3 → 4 Cl2 + Ti(ClO4)4

References

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