Abstract
The X-ray crystal structure of 1,8-oxybis(ethyleneoxyethyleneoxy)anthracene-9,10-dione, 1, in the presence of nitric acid and water has been determined. The structure indicates the complex can be described principally as 1·HNO3·2H2O (only two water molecules in contact with the acid), as opposed to [H5O2·1]+NO3-, where the proton has been transferred to water to from a higher-order hydronium ion. Formation of a solid-state, strong mineral acid adduct without hydronium ion formation has not been previously observed.
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