4-[2-(4-Chloro­phen­yl)hydrazinyl­idene]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-carbothio­amide

In the title mol­ecule, C11H10ClN5OS, an intra­molecular N—H⋯O hydrogen forms an S(6) ring motif. The dihedral angle between the pyrazole ring and the benzene ring is 3.77 (8)°. In the crystal, mol­ecules are linked by N—H⋯S and N—H⋯O hydrogen bonds into layers parallel to the bc plane

(3E,5E)-3,5-Bis(naphthalen-1-yl­methyl­idene)piperidin-4-one

In the title compound, C27H21NO, the piperidine ring adopts a chair conformation. The mean plane through the piperidine ring makes dihedral angles of 49.27 (5) and 63.07 (5)° with the naphthalene ring systems. In the crystal, mol­ecules are linked into dimers via pairs of inter­molecular C—H⋯O inter­actions, generating ten-membered R 2 2(10) ring motifs. C—H⋯π inter­actions further stabilize the crystal structure

9-Aminoacridin-10-ium 4-aminobenzoate dihydrate

The asymmetric unit of the title hydrated salt, C13H11N2 +.-C7H6NO2-.2H2O, consists of two independent 9-aminoacridinium cations, two 4-aminobenzoate anions and four water molecules. Both 9-aminoacridinium cations are essentially planar, with maximum deviations of 0.034 (1) and 0.025 (2) A ° , and are protonated at the pyridine N atoms. The 4-aminobenzoate anions are approximately planar, with dihedral angles of 9.16 (19) and 5.4 (2)° between the benzene ring and the carboxylate group. In the crystal, the two independent anions are connected by N—H...O hydrogen bonds, forming a layer parallel to (100). The layers are connected through the cations by N—H...N and N—H...O hydrogen bonds. The water molecules, which form O—H...O hydrogen-bonded chains along the b-axis direction, connect the anions and the cations by O—H...O, N—H...O and C— H...O hydrogen bonds. The crystal structure also features n–n interactions [centroid–centroid distances = 3.6343 (9)– 3.8366 (10) A °] and a C—H...n interaction

Ethyl ({5-[5′-(2-eth­oxy-2-oxoeth­oxy)-4,4′′-difluoro-1,1′:3′,1′′-terphenyl-4′-yl]-1,3,4-oxadiazol-2-yl}sulfan­yl)acetate

In the title compound, C28H24F2N2O6S, the whole mol­ecule is disordered over two sites with refined occupancies of 0.778 (3) and 0.222 (3). The central benzene ring makes dihedral angles of 56.0 (4), 34.5 (4) and 70.9 (4)°, respectively, with the two terminal benzene rings and the 1,3,4-oxadiazole ring in the major component of the disordered mol­ecule. The corresponding angles in the minor component are 59.7 (16), 25.6 (13) and 75.5 (14)°. In the crystal, mol­ecules are linked via C—H⋯F, C—H⋯N, C—H⋯O and C—H⋯S hydrogen bonds into a three-dimensional network. In addition, C—H⋯π inter­actions are observed

N′-(3,4-Dichloro­benzyl­idene)-5-methyl-1-(4-nitro­phen­yl)-1H-1,2,3-triazole-4-carbohydrazide

In the title compound, C17H12Cl2N6O3, the 1H-1,2,3-triazole ring [maximum deviation = 0.003 (1) Å] forms dihedral angles of 34.08 (6) and 28.38 (6)°, respectively, with the nitro- and dichloro-substituted benzene rings. The dihedral angle between the benzene rings is 6.68 (5)°. In the crystal, C—H⋯O hydrogen bonds link the mol­ecules into chains running parallel to the a axis

1-[2-(4-Chloro­phen­yl)-5-phenyl-2,3-dihydro-1,3,4-oxadiazol-3-yl]ethanone

In the title compound, C16H14ClN3O2, the 2,3-dihydro-1,3,4-oxadiazole ring [maximum deviation = 0.030 (1) Å] and the pyridine ring [maximum deviation = 0.012 (1) Å] are inclined slightly to one another, making a dihedral angle of 11.91 (5)°. The chloro-substituted phenyl ring is almost perpendicular to the 2,3-dihydro-1,3,4-oxadiazole and pyridine rings at dihedral angles of 86.86 (5) and 75.26 (5)°, respectively. In the crystal, π–π [centroid–centroid distance = 3.7311 (6) Å] and C—H⋯π inter­actions are observed

3,5-Bis(4-fluoro­phen­yl)isoxazole

In the crystal structure of the title compound, C15H9F2NO, the complete mol­ecule is generated by a crystallographic twofold rotation axis and the O and N atoms of the central isoxazole ring are statistically disordered with equal site occupancies. The terminal benzene rings form a dihedral angle of 24.23 (3)° with the isoxazole ring. The dihedral angle between the benzene rings is 47.39 (2)°. No significant inter­molecular inter­actions are observed

Ethyl 4-anilino-3-nitro­benzoate

In the title compound, C15H14N2O4, the dihedral angle between the benzene and phenyl rings is 73.20 (6)°. An intra­molecular N—H⋯O hydrogen bond forms an S(6) ring motif. In the crystal, mol­ecules are linked by N—H⋯O and C—H⋯O hydrogen bonds into a layer parallel to the bc plane

3-Benzyl-7-(2,4-dichloro­phen­yl)-4H-1,3,4-thia­diazolo[2,3-c][1,2,4]triazin-4-one

In the title compound, C17H10Cl2N4OS, the phenyl ring and the H atoms attached to the adjacent C atom are disordered over two positions, with refined site occupancies of 0.509 (8) and 0.491 (8). The planar 4H-1,3,4-thia­diazolo[2,3-c][1,2,4]triazine ring system [maximum deviation = 0.048 (3) Å] forms dihedral angles of 76.9 (5), 74.9 (5) and 9.88 (12)°, respectively, with the major and minor parts of the disordered phenyl ring and with the dichloro-substituted benzene ring. In the crystal, pairs of C—H⋯O hydrogen bonds link the mol­ecules, forming inversion dimers with an R 2 2(18) graph-set motif. A short S⋯N contact of 2.801 (3) Å is observed between the dimers

Ethyl 2-(4-chloro­phen­yl)-1-phenyl-1H-benzimidazole-5-carboxyl­ate

In the title compound, C22H17ClN2O2, the essentially planar benzimidazole ring system [maximum deviation = 0.012 (2) Å] forms dihedral angles of 28.69 (6) and 63.65 (7)°, respectively, with the phenyl and chloro-substituted benzene rings. The dihedral angle between the phenyl and benzene rings is 64.23 (8)°. In the crystal, mol­ecules are linked into a zigzag chain along the a axis by inter­molecular C—H⋯O hydrogen bonds. C—H⋯π inter­actions are also present