The torsion angle of the C-SO(2)-NH-C moiety in the title compound, C(13)H(10)Cl(3)NO(2)S, is 50.4 (2)°. The sulfonyl and aniline benzene rings are tilted relative to each other by 69.6 (1)°. The crystal structure is stabilized by N-H⋯O hydrogen bonds, linking the mol-ecules into zigzag chains parallel to the b axis.

The title compound, C(9)H(9)ClN(2)O(5)S, is of inter-est as a precursor to biologically active substituted quinolines and related compounds. The structure displays inter-molecular C-H⋯O inter-actions. Each mol-ecule is linked to two adjacent neighbours via weak centrosymmetric dimer-forming inter-actions, forming chains in the [101] direction.

In the mol-ecular structure of the title compound, C(11)H(10)ClNO(3), the conformation of the N-H bond in the amide segment is syn to the ortho-methyl group in the phenyl ring. The C=O and O-H bonds of the acid group are in the relatively rare anti position with respect to each other. This is an obvious consequence of the hydrogen bond donated to the amide carbonyl group. The central oxobutenoi...

The title hydrazone mol-ecule, C(14)H(11)ClN(2)O(2), has a trans conformation with respect to the methyl-idene unit. The dihedral angle between the two benzene rings is 37.6 (3)°. In the crystal, the presence of O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds leads to the formation of a three-dimensional network. The title compound crystallized in the chiral ortho-rhom-bic space group P2(1)2(1)2(1) and w...

In the title compound, C(14)H(12)ClNO(3)S, the conformation of the N-H bond in the C-SO(2)-NH-C(O) segment is anti to the C=O bond. The dihedral angle between the sulfonyl benzene ring and the -SO(2)-NH-C-O segment is 89.4 (1)° and that between the sulfonyl and benzoyl benzene rings is 89.1 (2)°. The crystal structure features inversion-related dimers linked by pairs of N-H⋯O hydrogen bonds.

In the title compound, C14H12ClNO4S, the dihedral angle between the aromatic rings is 82.07 (1)° and the dihedral angle between the planes defined by the S-N-C=O fragment and the sulfonyl benzene ring is 82.46 (3)°. In the crystal, the mol-ecules are linked into C(4) chains running along [001] by strong N-H⋯O hydrogen bonds. A C-H⋯O intera-ction reinforces the [001] chains: its graph-set symbol...

In the title compound, C(13)H(10)Cl(3)NO(2)S, the N-C bond in the C-SO(2)-NH-C segment forms trans and gauche torsion angles with respect to the S=O bonds. Further, the N-H bond in the C-SO(2)-NH-C segment is anti to the meta-Cl atom in the anilino benzene ring and nearly syn with respect to the ortho-methyl group in the sulfonyl benzene ring. The C-SO(2)-NH-C torsion angle is -49.4 (2)°. The s...

In the title compound, C(11)H(12)ClNO(3), the N-C=O fragment is twisted from the plane of the attached benzene ring by 48.39 (12)°. The carb-oxy-lic acid group is involved in O-H⋯O hydrogen bonding, which links pairs of mol-ecules into centrosymmetric dimers. N-H⋯O hydrogen bonds link these dimers, related by translation along the a axis, into ribbons.

The title compound, C(15)H(13)ClN(2)O(2), was prepared by the reaction of 3-methoxy-benzaldehyde and 4-chloro-benzo-hydrazide in methanol. The asymmetric unit consists of two unique molecules, which are linked together in the form of a cross by N-H⋯O and N-H⋯N hydrogen bonds. The dihedral angles between the two benzene rings in the mol-ecules are 77.3 (1) and 44.1 (1)°. In the crystal structure...

The title compound, C(14)H(12)ClNO(2), was prepared by refluxing 4-chloro-benzoyl chloride with o-anisidine in CHCl(3). The methoxy-phen-yl-amide segment of the mol-ecule is almost planar, with a dihedral angle of 5.10 (7)° between the benzene ring and the C-N-C(O)-C fragment. A weak intra-molecular N-H⋯O contact forms an S(5) ring and contributes to the planarity of this portion of the mol-ecu...