1-Fluoro-4-[(E)-2-nitro-vin-yl]benzene.

The title compound, C8H6FNO2, is almost planar (r.m.s. deviation for the non-H atoms = 0.019 Å) and the conformation across the C=C bond is trans. The C and H atoms of the side chain are disordered over two sets of sites in a 0.56 (3):0.44 (3) ratio. In the crystal, mol-ecules are linked by C-H⋯O inter-actions, thus forming C(5) chains propagating in [001].

N-(4-Methyl-phenyl-sulfon-yl)-3-nitro-benzamide.

In the title compound, C14H12N2O5S, the dihedral angle between the aromatic rings is 86.29 (1)° and the conformation between the C=O bond of the amide group and the meta-NO2 group is syn. The C-S-N-C torsion angle is -65.87 (19)° and the mol-ecule has an L-shaped conformation. In the crystal, the mol-ecules are connected into inversion dimers through pairs of N-H⋯O hydrogen bonds and C-H⋯O inter-actions forming R 2 (2)(8) and R 2 (2)(14) loops, respectively. The dimers are connected by further C-H⋯O inter-actions, thereby forming (100) sheets.

N-(4-Meth-oxy-benzo-yl)benzene-sulfon-amide.

In the title compound, C14H13NO4S, the dihedral angle between the aromatic rings is 69.81 (1)°; the dihedral angle between the planes defined by the S-N-C=O segment of the central chain and the sulfonyl benzene ring is 74.91 (1)°. In the crystal, the mol-ecules are linked by weak N-H⋯O hydrogen bonds into C(4) chains running along [100]. The mol-ecules in adjacent chains are linked by weak C-H⋯O inter-actions, generating R 2 (2) (16) dimeric pairs. Weak C-H⋯π inter-actions connect the double chains into (001) sheets.