N,N′-[1,3-Phenylenebis(methyl­ene)]dibenzene­sulfonamide

The complete mol­ecule of the title compound, C(20)H(20)N(2)O(4)S(2), is generated by crystallographic twofold symmetry, with two C atoms lying on the rotation axis. The dihedral angle between the central benzene ring and the pendant ring is 68.42 (6)° and the dihedral angle between the pendant rings is 45.11 (5)°. The torsion angles for the C—S—N—C and S—N—C—C fragments are −73.22 (15) and −150.45 (13)°, respectively. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, generating corrugated (001) sheets. Aromatic π–π stacking [centroid–centroid separation = 3.8925 (12) and 3.9777 (12) Å] and weak C—H⋯O inter­actions also occur.