The

chemical A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., w ...

compound Compound may refer to: Architecture and built environments * Compound (enclosure), a cluster of buildings having a shared purpose, usually inside a fence or wall ** Compound (fortification), a version of the above fortified with defensive struc ...

1,3-dioxetanedione, or 1,3-dioxacyclobutane-2,4-dione is a hypothetical oxide of carbon with formula C₂O₄. It can be considered a cyclic dimer of

carbon dioxide Carbon dioxide ( chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is trans ...

(CO₂) or as a double ketone of

1,3-dioxetane 1,3-Dioxetane (1,3-dioxacyclobutane) is a heterocyclic organic compound with formula C2O2H4, whose backbone is a four-member ring of alternating oxygen and carbon atoms. It can be viewed as a dimer of formaldehyde Formaldehyde ( , ) ( system ...

(1,3-dioxacyclobutane). Theoretical calculations indicate that the compound would be extremely unstable at room temperature (half-life of less than 1.1 μs) but may be stable at −196 °C.Errol Lewars (1996), ''Polymers and oligomers of carbon dioxide: ab initio and semiempirical calculations.'' Journal of Molecular Structure: THEOCHEM, Volume 363, Number 1, pp. 1–15.

References

Oxocarbons Dioxetanes Hypothetical chemical compounds {{theoretical-chem-stub