3-Chloro-N-(4-sulfamoylphenyl)propanamide

In the title compound, C9H11ClN2O3S, the dihedral angle between the benzene ring and the amido -NHCO- plane is 15.0 (2)degrees. An intramolecular C-H center dot center dot center dot O hydrogen bond generates an S(6) ring motif. In the crystal structure, the amino NH2 group is involved in intermolecular N-H center dot center dot center dot O hydrogen bonds, which connect the molecules into a double layer structure expanding parallel to the bc plane. The layers are further linked by an amido N-H center dot center dot center dot O hydrogen bond. Between the layers, a weak pi-pi interaction with a centroid-centroid distance of 3.7447 (12) angstrom is also observed.