A triclinic polymorph of N-[4-(4-methyl­benzene­sulfonamido)­phenyl­sulfon­yl]acetamide

In the asymmetric unit of the title compound, C₁₅H₁₆N₂O₅S₂, there are two symmetry-independent mol­ecules which adopt similar conformations, with dihedral angles between the aromatic rings of 59.30 (8) and 61.81 (8)°, and dihedral angles between acetamide group and the benzene ring of 77.08 (10) and 78.40 (10)°. Each type of mol­ecule forms similar one-dimensional polymeric structures extending along the b axis via N—H...O hydrogen bonds. These hydrogen bonds generate two types of centrosymmetric motifs, R₂²(8) and R₂²(20). Moreover C—H...O inter­actions assemble the mol­ecules into a three-dimensional framework. The crystal structure was determined from a non-merohedral twin [ratio of the twin components = 0.322 (4):0.678 (4)].