The title mol-ecule, C(13)H(11)Cl(2)N(3)O, is almost planar and adopts a trans conformation with respect to the -N=N- bond; the dihedral angle between the rings is 3.47 (2)°. The N-N bond lengths indicate the presence of single- and double-bond characters and hence the -N=N-NH- moiety. In the crystal, inversion dimers linked by pairs of N-H⋯Cl hydrogen bonds occur, and C-H⋯π and π-π stacking in...

In the title compound, C(13)H(11)Cl(2)NO(2)S, the conformations of the N-C bonds in the C-SO(2)-NH-C segments have gauche torsions with respect to the S=O bonds. The dihedral angle between the two benzene rings is 68.6 (1)°. The crystal structure features inversion dimers linked by pairs of N-H⋯O hydrogen bonds.

In the title compound, C12H9ClN2O4S, the dihedral angle between the benzene rings is 70.60 (11)°. An intra-molecular N-H⋯Cl contact occurs. In the crystal, mol-ecules form inversion dimers via pairs of N-H⋯O hydrogen bonds.

The fused five- and six-membered rings in the title mol-ecule, C10H9N3O2, are essentially coplanar, the largest deviation from the mean plane being 0.012 (1) Å for the C atom linked to the nitro group. The fused-ring system makes a dihedral angle of 11.34 (6)° with the nitro group, leading to a syn-periplanar conformation. The plane through the atoms forming the allyl group is nearly perpendicu...

In the title compound, C(24)H(29)BrO(6), the dihedral angle between the cyclo-hexenone mean planes is 57.63 (2)° while the dihedral angles between the benzene ring and the cyclo-hexenone mean planes are 58.42 (2) and 69.08 (3)°. The two cyclo-hexenone rings both show an envelope conformation, with the C atom bearing two methyl groups as the flap atom in each ring. Two intra-molecular O-H⋯O hydr...

In the crystal structure of the title compound, C(18)H(14)N(4), the mol-ecule assumes site symmetry with the centroid of the benzene ring located on the inversion center. The mol-ecule is almost flat, with a dihedral angle of 2.70 (9)° between the pyridine and benzene rings.

In the title compound, C(13)H(10)Cl(3)NO(2)S, torsion angle of the C-SO(2)-NH-C group in the mol-ecule is -58.57 (26)°. The sulfonyl and aniline benzene rings are tilted relative to each other by 84.2 (1)°. The crystal structure features inversion-related dimers linked by pairs of N-H⋯O hydrogen bonds.

In the title compound, C(11)H(11)FN(4)S, the dihedral angle between the 1,2,4-triazole ring and the benzene ring is 25.04 (12)° and an intra-moleuclar C-H⋯S inter-action leads to an S(6) ring. In the crystal, inversion dimers linked by pairs of N-H⋯S hydrogen bonds generate R(2) (2)(8) loops.

The title compound, C(23)H(18)O(4), is a 1,4-enedione compound which contains a naphthalene ring and a benzene ring. The dihedral angle between the ring systems is 74.9 (2)°. In the crystal, the mol-ecules form π-π stacking inter-actions between naphthalene rings of inversion-related mol-ecules, with an inter-planar spacing of 3.499 (2) Å.

In the title compound, C(17)H(14)O(3), the dihedral angle between the phenyl ring and the benzene ring of the chromanone moiety is 67.78 (3)°. The six-membered heterocyclic ring of the chromanone moiety adopts a half-chair conformation. The structure is stabilized by weak inter-molecular C-H⋯O inter-actions that link the mol-ecules into inversion dimers.