Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.007 Å; R factor = 0.076; wR factor = 0.147; data-to-parameter ratio = 15.2.The asymmetric unit of the title compound, C 20 H 24 N 2 O 6 S 2 , comprises one half-molecule, the remaining portion being generated via an inversion centre. The dihedral angle between the plane of the benzene ring and the SO 2 -NH-C(O)-C-C segment is 89.9 (1) . In the crystal, intermolecular N-HÁ Á ÁO(S) hydrogen bonds link the molecules into infinite chains in [101].
Related literatureFor related structures, see: Gowda et al. (2007, 2010a,b).
ExperimentalCrystal data
In the title compound, C18H18Cl2N2O6S2, the asymmetric unit contains half a molecule with a center of symmetry at the mid-point of the central C—C bond. The dihedral angle between the benzene ring and the SO2—NH—C(O) segment in the two halves of the molecule is 83.5 (2)°. In the crystal, N—H⋯O(S) intermolecular hydrogen bonds link the molecules into infinite chains running along the c axis. The O atom involved in the hydrogen bond has a longer S—O bond than the other O atom bonded to S [1.403 (4) versus 1.361 (4) Å].
In the molecule of the title compound, C16H17NO, the two aromatic rings are almost perpendicular to each other [dihedral angle 85.90 (5)°]. The crystal structure is stabilized by intermolecular N—H⋯O hydrogen bonds which link the molecules, forming C(4) chains running along the c axis.
There are two half-molecules in the asymmetric unit of the title compound, C32H30Cl4N4, in both of which the N—H bonds are syn to the meta-chloro substituents in the adjacent benzene ring. The other two Cl atoms of these two molecules are disordered with occunpancy ratios of 0.79 (2):0.21 (2) and 0.68 (1):0.32 (1). Adjacent chlorophenyl rings make dihedral angles of 74.3 (2) and 63.0 (2)° in the two molecules. In the crystal, intermolecular N—H⋯N hydrogen bonds link the molecules into infinite chains.
In the title compound, C16H17NO, the dihedral angle between the two benzene rings is 16.6 (1)°. The crystal structure is stabilized by intermolecular N—H⋯O hydrogen bonds, which link the molecules into chains running along the c axis.
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