Crystal structure of (E)-3-({6-[2-(4-chlorophenyl)ethenyl]-3-oxo-2,3-dihydropyridazin-4-yl}methyl)pyridin-1-ium chloride dihydrate

Abstract

In the title compound, C18H15ClN3O+·Cl−·2H2O, three intramolecular hydrogen bonds are observed, N—H...O, O—H...Cl and O—H...O. In the crystal, molecules are connected by C—H...Cl and N—H...O hydrogen bonds. Strong C—H...Cl, N—H...O, O—H...Cl and O—H...O hydrogen-bonding interactions are implied by the Hirshfeld surface analysis, which indicate that H...H contacts make the largest contribution to the overall crystal packing at 33.0%.

Keywords

• crystal structure
• pyridazine
• pyridazinone derivative
• hydrogen bonding
• hirshfeld surfaces