(2E)-1-(2,4-Dichloro­phen­yl)-3-[3-(4-nitro­phen­yl)-1-phenyl-1H-pyrazol-4-yl]prop-2-en-1-one

In the title compound, C₂₄H₁₅Cl₂N₃O₃, the C=C double bond is E configured. The 1-phenyl-1H-pyrazole moiety is roughly planar (r.m.s. deviation of all fitted non-H atoms = 0.0780 Å), but the mean planes of the two components are inclined at an angle of 9.95 (7)°. The mean plane defined by the non-H atoms of the 1H-pyrazole ring encloses angles of 9.95 (7), 24.54 (6) and 43.02 (6)° with the mean planes of the different benzene rings. In the crystal, C—H...O contacts are present and result in the formation of a double-layer two-dimensional network lying parallel to (110). The shortest inter­centroid distance between two aromatic systems is 3.5455 (7) Å and is apparent between two pyrazole systems. Further π–π inter­actions are manifest between a pair of 4-nitro­phenyl rings [centroid-to-centroid distance = 3.6443 (7) Å] and a pair of 2,4-dichloro­phenyl rings [centroid-to-centroid distance = 3.7797 (7) Å].

(2E)-3-[4-(Benz­yloxy)phen­yl]-1-(2,6-dichloro-3-fluoro­phen­yl)prop-2-en-1-one

In the title compound, C₂₂H₁₅Cl₂FO₂, a chalcone derivative featuring a threefold-halogenated aromatic substituent, the conformation about the C=C bond is E. In the crystal C—H...F and C—H...Cl contacts connect the mol­ecules into undulating sheets parallel to (101). In addition, C—H...π inter­actions are also present.

1,5-Dibromo-2,4-dimeth­oxy­benzene

In the title compound, C₈H₈Br₂O₂, all non-H atoms lie essentially in a common plane (r.m.s deviation of all fitted non-H atoms = 0.0330 Å). In the crystal, weak C—H...O hydrogen bonds connect the mol­ecules, forming chains which extend along the b-axis direction.