The aromatic stabilities of cationic and anhydrobase forms of 30 synthetic flavylium salts are predicted using the concepts of absolute hardness and relative hardness. These predictions are supported by other theoretical measures of aromaticity and reactivity, and are in good agreement with experimental findings. A flavylium salt model compound is also proposed, which is expected to exhibit high stability and low reactivity.
D. Amić and N. Trinajstić, J. Chem. Soc., Perkin Trans. 2, 1991, 891 DOI: 10.1039/P29910000891
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