5-(3,5-Di­fluoro­phen­yl)-1-(4-fluoro­phen­yl)-3-tri­fluoro­methyl-1H-pyrazole

In the title compound, C₁₆H₈F₆N₂, the dihedral angle between the pyrazole and di­fluoro­benzene rings is 50.30 (13)°, while those between the pyrazole and fluoro­benzene rings and between the di­fluoro­benzene and fluoro­benzene rings are 38.56 (13) and 53.50 (11)°, respectively. Aromatic π–π stacking inter­actions between adjacent di­fluoro­benzene rings [centroid–centroid separation = 3.6082 (11) Å] link the mol­ecules into dimers parallel to [21-2].

N′-Benzyl­idene-2-chloro-N-(4-chloro­phen­yl)acetohydrazide

In the title compound, C₁₅H₁₂Cl₂N₂O, the atoms not making up the chloro­benzene ring are approximately coplanar (r.m.s. deviation = 0.073 Å). The dihedral angle between these 13 atoms and the chloro­benzene ring is 67.37 (10)°. The C=O and Csp²—Cl groups are almost eclipsed [Cl—C—C=O = −6.5 (3)°]. In the crystal, C(6) chains linked by C—H...O hydrogen bonds result in [100] chains.

(1Z)-1-(1-Benzo­furan-2-yl)ethanone oxime

The title compound, C₁₀H₉NO₂, is almost planar (r.m.s. deviation for the non-H atoms = 0.027 Å) and the conformation across the C=N bond is syn. Further, the O atom of the benzo­furan ring is syn to the CH₃ group in the side chain. In the crystal, mol­ecules are linked into C(3) chains propagating in [010] by O—H...N hydrogen bonds.

4-(4-Methyl­phen­yl)-2-(prop-2-yn-1-yl)phthalazin-1(2H)-one

In the title compound, C₁₈H₁₄N₂O, the dihedral angle between the methyl­phenyl ring and the phthalazone ring system (r.m.s. deviation = 0.034 Å) is 53.93 (9)°. In the crystal, mol­ecules are connected by C—H...O hydrogen bonds, forming chains along [101]. The chains are linked by π–π inter­actions [centroid–centroid distance 3.6990 (12) Å], forming layers parallel to (10-1).

(E)-N′-[4-(Di­methyl­amino)­benzyl­idene]-2-(4-methyl­phen­oxy)acetohydrazide

In the title compound, C₁₈H₂₁N₃O₂, the dihedral angle between the benzene rings is 68.85 (11)°. In the crystal, the mol­ecules are linked by C—H...O and N—H...O hydrogen bonds, as well as weak C—H...π contacts, forming a three-dimensional supra­molecular architecture.

6,7-Dimeth­oxy-2,4-di­phenyl­quinoline

In the title structure of the title compound, C₂₃H₁₉NO₂, two conformationally similar mol­ecules (A and B) comprise the asymmetric unit. The dihedral angle between phenyl rings bridged by the quinoline moiety are 76.25 (8)° in mol­ecule A and 70.39 (9)° in mol­ecule B. In the crystal, the independent mol­ecules are connected by C—H...O hydrogen bonds and the resulting dimeric aggregates are linked by π–π [inter-centroid distance = 3.7370 (8) Å] and C—H...π inter­actions, forming a three-dimensional architecture.

2-Nitro­benzyl methane­sulfonate

In the title compound, C₈H₉NO₅S, the dihedral angle between the benzene ring and the nitro group is 5.86 (15)° and the C—C—O—S group adopts an anti conformation [torsion angle = −168.44 (15)°]. In the crystal, mol­ecules are linked by C—H...O hydrogen bonds, generating a three-dimensional network.

Bis(2-bromo­benz­yl) ether

In the title compound, C₁₄H₁₂Br₂O, the dihedral angle between the aromatic rings is 2.7 (3)° and the Br atoms lie on the same side of the mol­ecule. No inter­molecular inter­actions occur in the crystal beyond van der Waals contacts.