Face-to-face stacking of quinoid rings of alkali salts of bromanilic acid

Molčanov, K.; Kojić-Prodić, B.

doi:10.1107/S0108768111051159

Figure 3
Dissociation of bromanilic acid (H₂BA) showing its monoanion (HBA^-) with a delocalized system in half of the ring, and its dianion (BA^2-) with two delocalized systems separated by two single C-C bonds.