1-(3-Carboxylatophenyl)-4,4′-bipyridin-1-ium dihydrate

Abstract

In the crystal structure of the title compound, C17H12N2O2·2H2O, the carboxylate group is linked via O—H...O hydrogen bonds to two water molecules. The crystal packing is best described as parallel layers (viewed along the a axis) of viologen and water molecules associated via O—H...O hydrogen bonds and π–π interactions, with a centroid–centroid separation of 3.8276 (9) Å.