1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-aminium chloride–thio­urea (1/1)

In the title compound, C11H14N3O+·Cl−·CH4N2S, the components are connected into a two-dimensional polymeric structure parallel to (001) via N—H⋯Cl, N—H⋯O, N—H⋯S and C—H⋯S hydrogen bonds. The dihedral angle between the phenyl and 2,3-dihydro-1H-pyrazole rings is 44.96 (7)°

4-[(E)-({4-[(4-Amino­phen­yl)sulfon­yl]phen­yl}imino)­meth­yl]phenol ethanol monosolvate

In the title compound, C19H16N2O3S·C2H6O, the 4-hy­droxy­benzyl­idene group is oriented at dihedral angles of 73.17 (7) and 77.06 (7)° with respect to the aniline groups. The sulfonyl group make dihedral angles of 44.89 (13) and 59.16 (12)° with the adjacent aniline groups. In the crystal, a two-dimensional polymeric network parallel to (010) is formed by N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds. There also exist π–π inter­actions with a distance of 3.5976 (18) Å between the centroids of hy­droxy­phenyl rings

2-Hy­droxy-5-[(E)-(1H-indol-3-yl­methyl­idene)aza­nium­yl]benzoate

The zwitterionic title compound, C16H12N2O3, was obtained as a result of the condensation of 5-amino­salicylic acid and 1H-indole-3-carbaldehyde. The whole mol­ecule is roughly planar: the 4-hy­droxy­anilinic group and the 1H-indole-3-carbaldehyde moieties are only slightly twisted, making a dihedral angle of 7.77 (11)°, whereas, the carboxyl­ate group makes a dihedral angle of 3.34 (45)° with the parent 4-hy­droxy­anilinic group. S(6) ring motifs are formed due to intra­molecular O—H⋯O hydrogen bonding. In the crystal, inter­molecular N—H⋯O and C—H⋯O hydrogen bonds build up pseudo-rings with R 1 2(4), R 2 1(7) and R 2 2(14) ring motifs. These pseudo-dimers are further linked by N—H⋯O hydrogen bonds into a chain extending along [101]. C—H⋯π inter­actions also occur, along with offset π–π inter­actions between the anilinic phenyl and the heterocyclic five-membered rings with a centroid–centroid distance of 3.5716 (19) Å

N′-[(1E)-1-(4-Chloro­phen­yl)ethyl­idene]formohydrazide

The structure of the title compound, C9H9ClN2O, consists of centrosymmetric dimers due to inter­molecular N—H⋯O hydrogen bonding, forming R 2 2(8) ring motifs. The dihedral angle between the p-chloro­phenyl unit and the remaining heavy-atom group is 6.77 (17)°

5-[(E)-(2-Fluoro­benzyl­idene)amino]-2-hy­droxy­benzoic acid

In the title compound, C14H10FNO3, the dihedral angle between the two benzene rings is 32.66 (14)°. An S(6) ring motif is formed due to an intra­molecular O—H⋯O hydrogen bond between the hy­droxy and carbonyl groups. In the crystal, mol­ecules are consolidated into dimers with R 2 2(8) ring motifs by pairs of O—H⋯O hydrogen bonds

4-[(Anthracen-9-yl­methyl­idene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

In the title compound, C26H21N3O, the phenyl ring of the 4-amino­anti­pyrine group and the heterocyclic five-membered ring along with its substituents, except for the N-bound methyl group (r.m.s. deviation = 0.0027 Å), form a dihedral angle of 54.20 (5)°. Two S(6) ring motifs are formed due to intra­molecular C—H⋯N and C—H⋯O hydrogen bonds. In the crystal, mol­ecules are linked into supra­molecular chains along the a-axis direction via C—H⋯O contacts

2-[(2-Chloro­benzyl­idene)amino]-4,5,6,7-tetra­hydro-1-benzothio­phene-3-carbonitrile

In the title compound, C16H13ClN2S, the mean planes fitted through all non-H atoms of the heterocyclic five-membered and the benzene rings are oriented at a dihedral angle of 5.19 (7)°. In the crystal, a weak C—H⋯π inter­action occurs, along with weak π–π inter­actions [cenroid–centroid distance = 3.7698 (11) Å]

Mutual prodrug of cephazolin and benzydamin: 3-[(1-benzyl-1H-indazol-3-yl)­oxy]-N,N-dimethyl­propan-1-aminium 3-{[(5-methyl-1,3,4-thia­diazol-2-yl)sulfan­yl]meth­yl}-8-oxo-7-[(1H-tetra­zol-1-yl)acetamido]-5-thia-1-aza­bicyclo­[4.2.0]octane-2-carboxyl­ate (benzydaminium cephazolinate)

In the crystal of the title mol­ecular salt, C19H24N3O+·C14H13N8O4S3 −, the cations and anions are linked by N—H⋯O hydrogen bonds. Short intra­molecular C—H⋯O contacts occur within the anion and inter­molecular C—H⋯O and C—H⋯π bonds help to establish the packing

N-{(E)-[4-(Dimethyl­amino)­phen­yl]methyl­idene}-2,3-dimethyl­aniline

There are two independent mol­ecules in the asymmetric unit of the title compound, C17H20N2, in which the dihedral angles between the aromatic rings are 30.34 (11) and 41.44 (8)°. In the crystal, weak C—H⋯π inter­actions may help to establish the packing