Abstract

The structure of the title compound, C14H19N2+·C9H3Cl6O4−·H2O, consists of singly ionized 1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid anions and protonated 1,8-bis(dimethylamino)naphthalene cations. In the (8-dimethylamino-1-napthyl)dimethylammonium cat­ion, a strong disordered intramolecular hydrogen bond is formed with N⋯N = 2.589 (3) Å. The geometry and occupancy obtained in the final restrained refinement suggest that the disordered hydrogen bond may be asymmetric. Water mol­ecules link the anion dimers into infinite chains via hydrogen bonding.

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