Wiktionary
dichlorine hexoxide
n. (context inorganic compound English) A dark red fuming liquid whose solid form has the structure [ClO2]+[ClO4]-; it is made by the action of ozone on chlorine dioxide and is diamagnetic and a strong oxidizing agent.
Wikipedia
Dichlorine hexoxide
Dichlorine hexoxide is the chemical compound with the molecular formula , which is correct for its gaseous state. However, in liquid or solid form, this chlorine oxide ionizes into the dark red ionic compound chloryl perchlorate , which may be thought of as the mixed anhydride of chloric and perchloric acids.
It is produced by reaction between chlorine dioxide and excess ozone:
2 + 2 → 2 + 2 → + 2