title: N,N'-Bis(4-chloro-phenyl-sulfon-yl)suberamide.
abstract: The asymmetric unit of the title compound, C(20)H(22)Cl(2)N(2)O(6)S(2), contains one half-mol-ecule with a center of symmetry at the mid-point of the central C-C bond. The conformations of all the N-H, C=O and C-H bonds in the central amide and aliphatic segments are anti to their adjacent bonds. The mol-ecule is bent at the S atom with a C-SO(2)-NH-C(O) torsion angle of -80.6 (4)°. The dihedral angle between the benzene ring and the SO(2)-NH-C(O)-CH(2)-CH(2)-CH(2) segment is 79.5 (2)°. In the crystal, inter-molecular N-H⋯O(C) and N-H⋯O(S) hydrogen bonds link the mol-ecules into chains along the b axis.
authors.forename: Vinola Z
authors.initials: VZ
authors.lastname: Rodrigues
authors.forename: Sabine
authors.initials: S
authors.lastname: Foro
authors.forename: B Thimme
authors.initials: BT
authors.lastname: Gowda
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references.pmid: 19171970
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):o837
references.pmid: 21754120
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):o884
references.pmid: 21754161