The perchlorate salt of the novel diprotonated dinucleating ligand 1,3-bis{[2-(2-pyridinio)ethyl][2-(2-pyridyl)ethyl]amino}benzene.

In the title salt, 1,3-bis{[2-(2-pyridinio)ethyl][2-(2-pyridyl)ethyl]amino}benzene diperchlorate dihydrate, C34H38N(6)2+.2ClO4-.2H2O, the cation contains two ethylpyridyl and two ethylpyridinium pendant pairs anchored to the two N atoms of 1,3-phenylenediamine. The pyridyl and pyridinium N atoms are flanked by a molecule of water through strong hydrogen-bonding interactions [N-H...O = 2.762 (6) and 2.758 (6) A, and O-H...N = 2.834 (6) and 2.839 (6) A]. The water molecules have weak hydrogen-bonding interactions with the perchlorate anions as well. One of the perchlorate anions is severely disordered.