1,3-Dioxetanedione
The chemical compound 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 or as a double ketone of 1,3-dioxetane.
Theoretical calculations indicate that the compound would be extremely unstable at room temperature ; but may be stable at −196 °C.
