3-(5-Chloronaphthalene-1-sulfonamido)-2-(2-hydroxyethyl)-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-5-ium chloride

Abstract

In the cation of the title compound, C18H20ClN4O3S+·Cl−, the tetrahydropyridinium ring assumes a half-chair conformation. The dihedral angle between the pyrazole ring and the naphthalene ring system is 75.19 (6)°. In the crystal, ions are linked into a three-dimensional network by N—H...O, N—H...Cl and O—H...Cl hydrogen bonds and weak π–π stacking interactions with centroid–centroid distances of 3.608 (2) Å.