In the title compound, C(6)H(4)Cl(2)OS, the acetyl group is almost coplanar with the thio-phene ring [dihedral angle = 4.01 (2)°]. In the crystal, short inter-molecular O⋯Cl contacts [2.9494 (14) and 3.1191 (14) Å] link the mol-ecules into infinite (100) sheets and aromatic π-π stacking [centroid-centroid separation = 3.5422 (10) Å] consolidates the packing.

In the title compound, C9H12N2O, the dihedral angle between the benzene ring and the mean plane of the acetohydrazide group is 88.2 (7)°. In the crystal, N-H⋯O hydrogen bonds and weak C-H⋯O inter-actions link the mol-ecules into infinite ribbons along [001].

In the title compound, C(15)H(14)O(2), the plane of the central -C(=O)-O- group is inclined at an angle of 3.7 (2)° with respect to the benzoate ring. The two benzene rings are almost perpendicular, making a dihedral angle of 87.4 (1)°. In the crystal, mol-ecules are packed into infinite chains through weak C-H⋯π inter-actions.

In the title compound, C(14)H(12)ClNO, the aromatic rings make a dihedral angle of 59.25 (5)°. The methyl group is disordered over two equally occupied positions. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into infinite C(4) chains running along the a axis.

Three independent mol-ecules comprise the asymmetric unit of the title compound, C8H9NO2, in which the dihedral angles between the amide group and the benzene ring are 3.0 (2), 4.0 (3) and 3.3 (9)°. In the crystal, O-H⋯O hydrogen bonds and weak C-H⋯N inter-actions are observed, forming infinite chains along [101].

The conformations of the N-H and C=O bonds in the structure of the title compound, C(13)H(9)Cl(2)NO, are anti to each other, similar to that observed in N-phenyl-benzamide, N-(2-chloro-phen-yl)benzamide, N-(4-chloro-phen-yl)benzamide, N-(2,3-dichloro-phen-yl)benzamide, N-(2,6-dichloro-phen-yl)benzamide and other benzanilides. The amide -NHCO- group forms a dihedral angle of 33.0 (2)° with the b...

The conformation of the H-N-C=O unit in the title compound, C(13)H(9)Cl(2)NO, is trans, similar to the conformation observed in N-(3-chloro-phen-yl)benzamide, N-(2,3-dichloro-phen-yl)benzamide, N-(2,4-dichloro-phen-yl)benzamide, N-(2,6-dichloro-phen-yl)benzamide and N-(3,4-dichloro-phen-yl)benz-amide. The amide group makes dihedral angles of 14.3 (8) and 44.4 (4)° with the benzoyl and aniline r...