N-[(4-Methyl­phen­yl)sulfon­yl]acetamide

In the title compound, C₉H₁₁NO₃S, the dihedral angle between the benzene ring and the amide group is 76.7 (3)°. In the crystal, mol­ecules are linked by pairs of C—H...O hydrogen bonds into inversion dimers with R₂²(8) ring motifs. The dimers are further connected by N—H...O and C—H...O hydrogen bonds into an infinite tape running parallel to the b-axis direction.

N-[(4-Chloro­phen­yl)sulfon­yl]acetamide

The asymmetric unit of the title compound, C₈H₈ClNO₃S, consists of two crystallographically independent mol­ecules (A and B). The dihedral angles between the benzene ring and amide C—C(=O)—NH– plane are 87.6 (3) (mol­ecule A) and 86.0 (3)° (mol­ecule B). In the crystal, the independent mol­ecules are alternately linked by N—H...O hydrogen bonds into an infinite chain along the b axis. Short inter­molecular Cl...Cl contacts [3.2882 (5) and 3.2812 (5) Å] are also observed.