Dichlorine pentoxide is a hypothetical chlorine oxide with a chemical formula Cl2O5. The most stable configuration of dichlorine pentoxide is unknown, but theory predicts that the perchloryl/chloride peroxide structure would be the most stable among various isomers, such as the anhydride of chloric acid or the chlorous acid/perchloric acid mixed anhydride.
See also Dichlorine heptoxide Dichlorine trioxide Dichlorine monoxide Chlorine dioxide
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