N,N'-Bis(2-chloro-phenyl-sulfon-yl)suberamide.

In the crystal of the title compound, C(20)H(22)Cl(2)N(2)O(6)S(2), the asymmetric unit comprises half of a mol-ecule, the remaining portion is generated via an inversion centre. The conformation of the N-H and C=O bonds in the SO(2)-NH-C(O)-C segment is anti. The mol-ecule is bent at the S atom with the C-SO(2)-NH-C(O) torsion angle being 68.16†(19)°. The dihedral angle between the plane of the benzene ring and the SO(2)-NH-C(O)-C segment is 77.5†(1)°. Hydrogen bonds of the type N-H⋯O(C) link mol-ecules into supra-molecular chains along the b axis.