In the title compound, C23H27N3O4, the dihydro­pyridine ring adopts a 1,4 B conformation. Intra­molecular C—H⋯O contacts occur. In the crystal, N—H⋯O and N—H⋯N hydrogen bonds and C—H⋯N contacts connect the mol­ecules into strands along the a-axis direction.

In the title compound, C20H21N3O2·H2O, the aza-substitued six-membered ring adopts a L4 B conformation. In the crystal, classical N—H⋯O, N—H⋯N and O—H⋯O hydrogen bonds connect the entities into a three-dimensional network. Intra­molecular C—H⋯O contacts are also observed.

In the title compound, C22H24ClN3O4, intra­molecular C—H⋯O and C—H⋯N hydrogen bonds form S(9) and S(7) ring motifs, respectively. The 1,4-dihydro­pyridine ring adopts a flattened boat conformation. The benzene ring makes a dihedral angle of 33.36 (6)° with the pyrazole ring. In the crystal, pairs of N—H⋯N hydrogen bonds link the mol­ecules into inversion dimers. The dimers are stacked in column along the a axis through N—H⋯O and C—H⋯N hydrogen bonds. The crystal packing also features C—H⋯π inter­actions involving the pyrazole ring.

In the title compound, C37H30N4O·C4H8O2, the dihedral angle between the pyrazole and dihydro­pyrazole rings is 74.09 (10)°. In the crystal, the components are linked into centrosymmetric tetra­mers (two main mol­ecules and two solvent mol­ecules) by C—H⋯O hydrogen bonds. C—H⋯π and π–π [shortest centroid-centroid separation = 3.6546 (9) Å] inter­actions are also observed.

In the title compound, C20H21N3O4, the 1,4-dihydro­pyridine ring adopts a boat conformation. An intra­molecular C—H⋯O hydrogen bond generates an S(6) ring motif. The pyrazole ring makes dihedral angles of 87.81 (7) and 45.09 (7)° with the mean plane of the 1,4-dihydro­pyridine ring and the phenyl ring, respectively. In the crystal, mol­ecules are linked by N—H⋯N, N—H⋯O and C—H⋯O hydrogen bonds into a three-dimensional network.

In the title compound, C22H25N3O4, the dihydro­pyridine ring adopts a flattened boat conformation. The pyrazole ring makes a dihedral angle of 29.04 (5)° with the benzene ring. The mol­ecular structure is stabilized by an intra­molecular C—H⋯O hydrogen bond which generates an S(9) ring motif. In the crystal, mol­ecules are linked via N—H⋯O and C—H⋯N hydrogen bonds into a two-dimensional network parallel to the ab plane. The crystal structure is further consolidated by weak C—H⋯π inter­actions.

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].

Two mol­ecules make up the asymmetric unit of the title compound, C12H18N4O2, and both feature an intra­molecular O—H⋯N hydrogen bond, which generates an S(6) ring. The diethyl­amino group of one of the mol­ecules is disordered over two sets of sites in a 0.59 (2):0.41 (2) ratio. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into sheets lying parallel to the ac plane and C—H⋯π inter­actions are also observed.

In the title hydrate, C23H16N4O2·H2O, the pyrazole ring is approximately planar, with a maximum deviation of 0.023 (1) Å, and makes dihedral angles of 28.63 (6) and 46.44 (7)° with the naphtho­[2,1-b]furan ring system and the benzene ring, respectively, In the crystal, O—H⋯N, O—H⋯O, N—H⋯O, N—H⋯N, C—H⋯O and C—H⋯N hydrogen bonds link the mol­ecules, forming sheets lying parallel to the ab plane. The crystal structure also features C—H⋯π inter­actions involving the centroids of the pyrazole and benzene rings.

In the title mol­ecule, C24H16Cl2N2O, the dihedral angles between the pyrazole ring and its N- and C-bonded phenyl rings are 7.06 (10) and 53.15 (10)°, respectively. The dihedral angle between the two pendant rings is 52.32 (10)°. The mol­ecule exists in a trans conformation with respect to the acyclic C=C bond. In the crystal, inversion dimers occur in which each mol­ecule is linked to the other by two C—H⋯O hydrogen bonds to the same acceptor O atom. There are also short Cl⋯Cl contacts [3.3492 (9) Å] and C—H⋯π inter­actions.

In the title mol­ecule, C24H15BrCl2N2O, the dihedral angles betwen the pyrazole ring and its N-bonded phenyl (A) and C-bonded bromo­benzene (B) rings are 10.34 (16) and 40.95 (15)°, respectively. The dihedral angle between rings A and B is 56.89 (17)°. The title mol­ecule exists in a trans conformation with respect to the acyclic C=C bond. In the crystal, mol­ecules are linked into inversion dimers by pairs of C—H⋯O hydrogen bonds, generating R 2 2(14) loops. The crystal structure is further consolidated by C—H⋯π inter­actions.

In the title mol­ecule, C25H18Cl2N2O2, the dihedral angles between the pyrazole ring and its N- and C-bonded benzene rings are 8.28 (11) and 40.89 (10)°, respectively. The dihedral angle between the benzene rings is 39.03 (11)°. The title mol­ecule exists in a trans conformation with respect to the acyclic C=C bond. In the crystal, mol­ecules are linked into inversion dimers by pairs of inter­molecular C—H⋯O hydrogen bonds, generating R 2 2(14) loops.

In the title compound, C8H8FN3O, the semicarbazide group is close to being planar, with a maximum deviation of 0.020 (1) Å, and subtends a dihedral angle of 16.63 (9)° with its attached fluoro­benzene ring. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, forming layers lying parallel to the bc plane.

The title compound, C30H24N4, contains two pyrazole rings and four phenyl rings. The pyrazole rings are essentially planar, with maximum deviations of 0.003 (1) and 0.066 (1) Å and make a dihedral angle of 73.43 (6)°. The two pyrazole rings make dihedral angles of 40.08 (6), 9.28 (6), 15.78 (8) and 17.25 (7)° with their attached phenyl rings. In the crystal, there are no significant inter­molecular hydrogen-bonding inter­actions. The crystal structure is stabilized by C—H⋯π inter­actions.

In the title compound, C12H10N6S, a weak intra­molecular C—H⋯S hydrogen bond stabilizes the mol­ecular conformation. The pyrazole and triazole rings form a dihedral angle of 17.82 (8)°. The mol­ecule adopts an E configuration with respect to the central C=N double bond. In the crystal, inter­molecular N—H⋯N and N—H⋯S hydrogen bonds link mol­ecules into chains propagating in [20].

In the title compound, C16H11ClN2O, the chloro-substituted phenyl ring is disordered over two positions with refined site occupancies of 0.503 (2) and 0.497 (2). The dihedral angle between the pyrazole and phenyl rings is 7.93 (7)°. The pyrazole ring also forms dihedral angles of 24.43 (9)° and 28.67 (9)° with the disordered chloro-substituted benzene ring. In the crystal, mol­ecules are linked by inter­molecular C—H⋯O hydrogen bonds, generating R 2 1(7) and R 2 2(10) ring motifs. π–π inter­actions between the pyrazole and phenyl rings [centroid–centroid distance = 3.758 (1) Å] further stabilize the crystal structure.

The asymmetric unit of the title compound, C9H11N3O3, consists of two crystallographically independent mol­ecules. Both mol­ecules are almost planar, with r.m.s. deviations of 0.107 and 0.099 Å. In the crystal, the two independent mol­ecules form a dimer with an R 2 2(8) ring motif via N—H⋯O hydrogen bonds. The dimers are further linked into a three-dimensional network by O—H⋯O and N—H⋯O hydrogen bonds.

In the title compound, C24H18N2O, the pyrazole ring is essentially planar [maximum deviation = 0.004 (1) Å] and makes dihedral angles of 18.07 (4), 48.60 (4) and 9.13 (5)° with the phenyl rings. In the crystal, adjacent mol­ecules are connected via inter­molecular C—H⋯O hydrogen bonds, forming dimers. Furthermore, the crystal structure is stabilized by weak C—H⋯π and π–π inter­actions, with centroid–centroid distances of 3.6808 (5) Å.

In the title compound, C23H27N3O5, the pyrazole ring is inclined at dihedral angles of 38.16 (6) and 80.80 (6)°, respectively, to the least-squares planes of the benzene and dihydro­pyridine rings. In the crystal, adjacent mol­ecules are linked via a pair of N—H⋯N hydrogen bonds, forming an inversion dimer. The dimers are stacked in a column along the a axis through N—H⋯O hydrogen bonds. Intra- and inter­molecular C—H⋯N and C—H⋯O hydrogen bonds are also observed.

In the title compound, C9H12N2O2, the acetohydrazide group is approximately planar [maximum deviation = 0.034 (2) Å]. In the crystal, mol­ecules are linked via inter­molecular N—H⋯O, N—H⋯N and C—H⋯O hydrogen bonds into infinite two-dimensional networks parallel to (001).

In the title compound, C14H11FN6S, the 1,2,4-triazolo[3,4-b][1,3,4]thia­diazole ring system is essentially planar [maximum deviation = 0.022 (3) Å] and is inclined at dihedral angles of 15.00 (18) and 52.82 (16)° with respect to the pyrazole and phenyl rings. In the crystal, mol­ecules are linked into two-dimensional networks parallel to (100) via inter­molecular N—H⋯N and weak C—H⋯N hydrogen bonds. The crystal packing is further consolidated by weak π–π stacking inter­actions, with a centroid–centroid distance of 3.590 (2) Å. The crystal studied was an inversion twin with a 0.37 (13):0.63 (13) domain ratio.

In the title compound, C13H12N4OS, the dihedral angle between the triazole and naphthalene ring systems is 67.42 (5)°. In the crystal, adjacent mol­ecules are linked via two pairs of inter­molecular N—H⋯S inter­actions, forming R 2 2(8) and R 2 2(10) ring motifs. Weak C—H⋯S inter­actions generate infinite chains along [001] and the structure is further consolidated by C–H⋯π bonds and aromatic π⋯π stacking inter­actions [distance between the centroids of the triazole rings = 3.2479 (7) Å].

In the title mol­ecule, C9H13N3O, the non-hydrogen atoms of the hydrazide group are essentially planar [maximum deviation = 0.028 (1) Å for one of the N atoms]. The mean plane of this group forms a dihedral angle of 83.34 (5)° with the plane of the benzene ring. In the crystal structure, mol­ecules are linked by inter­molecular N—H⋯O, N—H⋯N and weak C—H⋯N hydrogen bonds into a two-dimensional network parallel to the ab plane. Additional stabilization is provided by a weak C—H⋯π inter­action.

The mol­ecule of the title compound, C10H13N5OS, is approximately planar, the dihedral angle between the triazole and benzene rings being 4.53 (10)°. The amino group adopts a pyramidal configuration. In the crystal structure, mol­ecules are linked into two-dimensional networks parallel to (001) by inter­molecular N—H⋯S and N—H⋯N hydrogen bonds. In addition, an S⋯S short contact of 3.3435 (7) Å is observed.

In the title compound, C9H11N3O, the benzene ring is disordered over two positions with refined occupancies of 0.922 (5) and 0.078 (5). The program PLATON [Spek (2009 ▶). Acta Cryst. D65, 148–155] recommends the solution in the space group C2/m with a = 7.3050 (3), b = 6.6745 (2), c = 18.3853 (6) Å and β = 96.986 (2)°. However, the large number of non-extinct reflections needed to be ignored if C2/m is chosen suggested that the space group is incorrect, even though the R values are lower than that for P21/c. The semicarbazone group is essentially planar, with a maximum deviation of 0.046 (1) Å for one of the N atoms. The mean plane of the semicarbazone group forms dihedral angles of 33.61 (8) and 39.1 (9)° with the benzene ring of the major and minor components, respectively. In the crystal structure, mol­ecules are linked by inter­molecular N—H⋯O hydrogen bonds into extended chains along the c axis. The crystal structure is further stabilized by weak inter­molucular C—H⋯π inter­actions.