9-[3-(Dimethyl­amino)­prop­yl]-10,10-dimethyl-9,10-dihydro­anthracen-9-ol

The asymmetric unit of the title compound, C₂₁H₂₇NO, contains two mol­ecules (A and B). In mol­ecule A, the central ring of the anthrone unit adopts a shallow boat conformation and the dihedral angle between the benzene rings is 18.96 (7)°. In mol­ecule B, the central ring is close to being planar (r.m.s. deviation = 0.078 Å) and the dihedral angle between the aromatic rings is 7.82 (7)°. In the crystal, mol­ecules are linked by O—H...N hydrogen bonds, forming zigzag C(7) chains of alternating A and B mol­ecules running parallel to [100]. The structure also features weak C—H...O and C—H...π inter­actions.

Olanzapinium dipicrate

The asymmetric unit of the title salt [systematic name: 2-methyl-4-(4-methyl­piperazin-4-ium-1-yl)-10H-thieno[2,3-b][1,5]benzodiazepinium bis­(2,4,6-trinitro­phenolate)], C₁₇H₂₂N₄S²⁺·2C₆H₂N₃O₇⁻, consists of a diprotonated olanzapinium cation and two independent picrate anions. In the cation, the piperazine ring adopts a distorted chair conformation and contains a positively charged N atom with quaternary character and the N atom in the seven-membered 1,5-diazepine ring, which adopts a boat configuration, is also protonated. The dihedral angle between the benzene and thiene rings flanking the diazepine ring is 58.8 (1)°. In one of the picrate anions, a nitro group is disordered over two sets of sites in a 0.748 (5):0.252 (5) ratio, and the benzene ring has a flat envelope conformation with the O⁻ C atom displaced from the mean plane of the other five C atoms [maximum deviation 0.0151 (14) Å] by 0.1449 (14) Å. In the crystal, N—H...O hydrogen bonds and weak inter­molecular C—H...S and C—H...O inter­actions link the components, forming a three-dimensional network.

3-Chloro-4-fluoro­anilinium picrate

In the title picrate salt of a dihalogenated aniline derivative, C₆H₆ClF⁺·C₆H₂N₃O₇⁻, the intra­cyclic C—C—C angles in the picrate anion cover a broad range [111.95 (12)–125.38 (13)°], while those in the aromatic cation span a much narrower range [118.25 (14)–122.33 (13)°]. In the crystal, classical N—H...O hydrogen bonds, as well as C—H...O contacts, connect the ions into layers parallel to (001).

Orphenadrinium dihydrogen citrate

In the title salt, C₁₈H₂₄NO⁺·C₆H₇O₇⁻, the dihedral angle between the benzene rings in the cation is 74.2 (5)°. In the crystal, anion–anion O—H...O hydrogen bonds and weak O—H...O inter­actions form infinite chains along [100]. Between these chains, cation–anion N—H—O hydrogen bonds are observed, forming an alternate pattern of cation and anion layers and leading to a two-dimensional network parallel to (100).

4-[Bis(4-fluoro­phen­yl)meth­yl]-1-[(2E)-3-phenyl­prop-2-en-1-yl]piperazin-1-ium 3-carb­oxy­propano­ate

In the title salt, C₂₆H₂₇F₂N₂⁺·C₄H₅O₄⁻, the piperazine N atom bearing the vinylic substituent is protonated. The piperazine ring adopts a chair conformation. In ther crystal, the succinate monoanions are connected via short O—H...O hydrogen bonds between the carb­oxy­lic acid and carboxyl­ate groups into undulating chains extending along [001] and the flunarizinium monocations are attached to these chains via N⁺—H...O⁻ hydrogen bonds. C—H...O inter­actions connect these chains into a three-dimensional network. The shortest centroid–centroid distance of 3.7256 (10) Å was found between one of the fluorinated benzene rings and the non-fluorinated phenyl ring in the neighbouring mol­ecule related by a glide plane.