Melitracenium chloride

In the title compound [systematic name: 3-(10,10-dimethyl­anthracen-9-yl­idene)-N,N,N-trimethyl­propanaminium chlor­ide], C21H26N+·Cl−, the cyclo­hexane ring adopts a chair conformation. The dihedral angle between the terminal benzene rings is 40.43 (12)°. In the crystal, ions are linked through inter­molecular N—H⋯Cl and C—H⋯Cl hydrogen bonds, forming supra­molecular layers parallel to the bc plane

1-(2-Hy­droxy­eth­yl)-4-[3-(2-trifluoro­methyl-9H-thioxanthen-9-yl­idene)prop­yl]piperazine-1,4-diium dichloride: the dihydro­chloride salt of flupentixol

In the title compound, C23H27F3N2OS+·2Cl−, the piperazinediium ring adopts a chair conformation. The dihedral angle between the two outer aromatic rings of the 9H-thioxanthene unit is 40.35 (18)°. The F atoms in the trifluoro­methyl group are disordered over two sets of sites with occupancies of 0.803 (6) and 0.197 (6). In the crystal, mol­ecules are connected by N—H⋯Cl, O—H⋯Cl C—H⋯O and C—H⋯Cl hydrogen bonds, forming chains propagating along [001]. There are also C—H⋯π inter­actions present in the crystal structure

2,2-Diphenyl­acetamide

In the title compound, C14H13NO, which has two mol­ecules in the asymmetric unit, the dihedral angles between the mean planes of the benzene rings are 84.6 (7) and 85.0 (6)°. N—H⋯O hydrogen bonds [forming R 2 2(8) ring motifs] and C—H⋯O hydrogen bonds dominate the crystal packing, forming zigzag chains parallel to the a axis. In addition, weak inter­molecular C—H⋯π inter­actions are observed

Methyl 2-(4-hy­droxy­benzo­yl)benzoate

In the title compound, C15H12O4, the dihedral angle between the benzene rings is 64.0 (6)°. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds, forming C(8) chains propagating in [10] and the packing is reinforced by weak C—H⋯O inter­actions

Opipramolium fumarate

In the crystal structure of the title salt {systematic name: 4-[3-(5H-dibenz[b,f]azepin-5-yl)prop­yl]-1-(2-hy­droxy­eth­yl)piperazin-1-ium (2Z)-3-carb­oxy­prop-2-enoate}, C23H30N3O+·C4H3O4 −, the piperazine group in the opipramol cation is protonated at only one of the N atoms. In the cation, the dihedral angle between the two benzene rings is 53.5 (6)°. An extensive array of inter­molecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds and weak inter­molecular N—H⋯O, C—H⋯O and C—H⋯π inter­actions dominate the crystal packing

9-[3-(Dimethyl­amino)­prop­yl]-2-trifluoro­meth­yl-9H-thioxanthen-9-ol

In the title compound, C19H20F3NOS, the dihedral angle between the mean planes of the two benzene rings attached to the thioxanthene ring is 41.8 (7)°; the latter has a slightly distorted boat conformation. The F atoms are disordered over three sets of sites [occupancy ratio = 0.564 (10):0.287 (10):0.148 (5)] and the methyl groups are disordered over two sets of sites [occupancy ratio = 0.72 (4):0.28 (4)]. The crystal packing is stabilized by O—H⋯N and C—H⋯S hydrogen bonds and weak C—H⋯Cg inter­actions

2,2-Diphenyl-4-(piperidin-1-yl)butanamide

In the title compound, C21H26N2O, the dihedral angle between the mean planes of the two benzene rings is 81.1 (9)°. The piperidine ring is in a chair conformation. The crystal packing is stabilized by N—H⋯N and N—H⋯O hydrogen bonds and weak inter­molecular C—H⋯O inter­actions

Oxomemazine hydro­chloride

In the title compound [systematic name: 3-(5,5-dioxo­phen­othia­zin-10-yl)-N,N,2-trimethyl­propanaminium chloride], C18H23N2O2S+·Cl−, the dihedral angle between the two outer aromatic rings of the phenothia­zine unit is 30.5 (2)°. In the crystal, the components are linked by N—H⋯Cl and C—H⋯Cl hydrogen bonds and C—H⋯π inter­actions

1-(2-Hy­droxy­eth­yl)-4-{3-[(E)-2-(trifluoro­meth­yl)-9H-thioxanthen-9-yl­idene]prop­yl}piperazine-1,4-diium bis­(3-carb­oxy­prop-2-enoate)

In the title salt, C23H27F3N2OS+·2C4H3O4 −, a non-merohedral twin [ratio of the twin components = 0.402 (1):0.598 (1)], the –CF3 group is disordered over two sets of sites with occupancy factors in the ratio 0.873 (2):0.127 (2). The dihedral angle between the two outer aromatic rings of the 9H-thioxanthene unit, whose thio­pyran ring has a screw-boat conformation, is 33.01 (9)°. The diprotonated piperazine ring adopts a chair conformation. In the crystal, inter­molecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds between neighboring mol­ecules form zigzag chains along the a axis and contribute to the stabilization of the packing

Cinnarizinium dipicrate

In the cinnarizinium dication of the title compound {systematic name: 1-diphenyl­methyl-4-[(2E)-3-phenyl­prop-2-en-1-yl]piperazine-1,4-diium bis­(2,4,6-trinitro­phenolate)}, C26H30N2 2+·2C6H2N3O7 −, the piperazine group is protonated at both N atoms and adopts a slightly distorted chair conformation. Strong N—H⋯Ohy­droxy cation–anion hydrogen bonds link the dication and two anions. In the cation, the (2E)-3-phenyl­prop-2-en-1-yl fragment is disordered over two positions in a ratio of 0.586 (4): 0.414 (4). Two nitro groups in one anion and three in the other one demonstrate rotational disorder. The crystal packing is stabilized by weak inter­molecular π–π [centroid–centroid distances = 3.844 (7), 3.677 (9), 3.825 (5), 3.634 (2) and 3.729 (7) Å], C—H⋯π and C—H⋯O inter­actions