The title compound, C(13)H(11)BrN(2)O(2), consists of two six-membered rings linked by an amide group and adopts a near planar conformation. The dihedral angle between the two rings is 8.38 (11)°. In the crystal structure, there are intra- and inter-molecular N-H⋯O hydrogen bonds, the latter forming inversion dimers.

In the structure of the title compound, C(13)H(9)Cl(2)NO(3)S, the N-H bond is anti to the C=O bond and the dihedral angle between the two aromatic rings is 76.9 (1)°. In the crystal structure, mol-ecules are linked by N-H⋯O(S) hydrogen bonds to form inversion dimers.

In the title compound, C(14)H(10)ClNO(2), the dihedral angle between the two rings is 59.4 (2)°. The two carbonyl groups are oriented almost anti-periplanar to each other, with a torsion angle of -160.43 (2)°. In the crystal, mol-ecules are linked into inversion dimers by pairs of N-H⋯O hydrogen bonds.

In the title compound, C(50)H(60)Cl(8)O(12), the mol-ecules are disordered about an inversion center located at the mid-point of the central C=C bond. These atoms show disorder and were modelled with two different orientations with site occupancies of 0.828 (3) and 0.172 (3). The dihedral angle between the two benzene rings in the asymmetric unit is 52.80 (6)°. Intramolecular C-H⋯O and C-H⋯Cl i...

In the title compound, C14H11N3O5, the dihedral angles between the amide group (r.m.s. deviation = 0.0429 Å) and the two benzene rings are 39.66 (6) and 63.04 (7)°. The dihedral angle between the benzene rings is 86.04 (7)°. The benzene rings form dihedral angles of 4.42 (5) and 8.91 (5)° with the adjacent nitro groups. In the crystal, mol-ecules are linked via a pair of C-H⋯O hydrogen bonds, f...

In the title compound, C(14)H(12)ClNO(3)S, the N-H bond is anti-periplanar to the C=O bond. The dihedral angle between the two aromatic rings is 78.7 (1)°. The crystal structure features inversion-related dimers linked by pairs of N-H⋯O(S) hydrogen bonds.

In the title compound, C(16)H(13)NO(2), the two benzene rings make a dihedral angle of 55.5 (2)°. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds and weak π-π stacking inter-actions [centroid-centroid distance = 3.595 (3)Å], linking the mol-ecules into ladders of inversion dimers.

In the title compound, C(14)H(12)ClNO(3)S, the N-H bond in the C-SO(2)-NH-C(O) segment is anti to the C=O bond. Further, the C=O bond and the meta-Cl atom in the benzoyl ring are also anti to each other. The dihedral angle between the sulfonyl and the benzoyl benzene rings is 72.4 (1)°. In the crystal, mol-ecules are linked by pairs of N-H⋯O hydrogen bonds, forming inversion dimers.

Mol-ecules of the title compound, C(14)H(10)FN(3)O, are essentially planar and in the crystal structure they form dimers via hydrogen bonds, involving pyrimidinyl N atoms and amino H atoms, about inversion centers. The centroids of the furyl and pyrimidinyl rings are separated by 3.489 (2)Å, indicating π-π stacking inter-actions.

In the crystal structure of the title compound, C(8)H(5)NO(4), essentially planar mol-ecules [largest deviation from the least-squares plane = 0.030 (2) Å] form stacks along the a-axis direction. Intercentroid separations between overlapping benzene rings within the stack are 3.6594 (12) Å and 3.8131 (12) Å. Mol-ecules from neighboring stacks are linked by weak C-H⋯O hydrogen bonds into inversi...