Dichlorohexoxide

Structural formula
General
Surname	Dichlorohexoxide
other names	Chloryl perchlorate
Molecular formula	Cl 2 O 6
Brief description	deep red liquid
External identifiers / databases
CAS number 12442-63-6 Wikidata Q1091519
properties
Molar mass	166.90 g mol −1
Physical state	liquid
density	2.02 g cm −3
Melting point	3.5 ° C
boiling point	203 ° C (theoretical)
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Dichlorohexaoxide is a chemical compound from the group of chlorine oxides .

Extraction and presentation

Dichlorohexaoxide can be obtained by reacting chlorine dioxide with ozone .

${\displaystyle \mathrm {2\ ClO_{2}+2\ O_{3}\longrightarrow Cl_{2}O_{6}+2\ O_{2}} }$

It is also possible to display it by reacting chlororyl fluoride and perchloric acid .

${\displaystyle \mathrm {ClO_{2}F+HClO_{4}\longrightarrow Cl_{2}O_{6}+HF} }$

properties

Dichlorohexaoxide is a deep red liquid that can be stored undecomposed below −30 ° C. It is the least explosive of all chlorine oxides, but it explodes on contact with organic matter. As a gas, it largely dissociates to form chlorine trioxide, which breaks down into chlorine dioxide and oxygen or into chlorine and oxygen at room temperature.

In the gas phase and as a liquid, it is present as covalent chlororyl perchlorate O ₂ Cl-O-ClO ₃ . The oxidation states of chlorine are here V and VII. In the solid, the compound exists as chlororyl chlorate with isolated ClO ₂ ⁺ and ClO ₄ ^- ions.

The compound is the mixed anhydride of chloric and perchloric acid. When reacting with water chloric acid and perchloric acid are formed, with ozone slowly dichloroheptaoxide .

${\displaystyle \mathrm {Cl_{2}O_{6}+H_{2}O\rightleftarrows \ HClO_{3}+HClO_{4}} }$

Individual evidence

1. ↑ ^{a b c d e f g} Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 315.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ ^{a b c d e} Ralf Steudel : Chemistry of Non-Metals, Syntheses - Structures - Bonding - Use , 4th Edition, 2014 Walter de Gruyter GmbH & Co. KG, Berlin / Boston, ISBN 978-3-11-030439-8 , Pp. 553–554, (accessed via De Gruyter Online).
4. ↑ Klaus M. Tobias, Martin Jansen: Structure of Cl ₂ O ₆ in the crystal. In: Angewandte Chemie 98, 1986, pp. 994-995, doi : 10.1002 / anie.19860981108 .