4-(4-Chloro­phen­yl)-4-hy­droxy­piperidinium maleate maleic acid solvate

In the cation of the title compound, C11H15ClNO+·C4H3O4 −·C4H4O4, the dihedral angle between the mean planes of the chlorine-substituted aromatic ring and the 4-hy­droxy­piperidinium ring (C–C–C–C–C–N) is 61.9 (8)°. Intra­molecular O—H⋯O and inter­molecular O—H⋯O and N—H⋯O hydrogen bonding, as well as weak π-stacking inter­actions [centroid–centroid distance = 3.646 (5) Å] help to establish the packing

(2E)-1-(2,5-Dichloro-3-thien­yl)-3-(6-meth­oxy-2-naphth­yl)prop-2-en-1-one

In the title compound, C18H12Cl2O2S, the dihedral angle between the thio­phene ring and the naphthalene ring system is 2.13 (4)°. In the crystal, pairs of weak inter­molecular C—H⋯O hydrogen bonds form centrosymmetric dimers

2-(4-Chloro­phen­yl)-6-meth­oxy­chroman-4-one

In the title mol­ecule, C16H13Cl O3, the two aromatic rings form a dihedral angle of 65.3 (1)°. In the crystal structure, weak inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into centrosymmetric dimers, which are further packed into columns propagating in [100] by weak C—H⋯π inter­actions

(E)-1-(4-Bromo­phen­yl)-3-(2-meth­oxy­phen­yl)prop-2-en-1-one

In the title compound, C16H13BrO2, the dihedral angle between the mean planes of the meth­oxy- and bromo-substituted benzene rings is 24.6 (1)°. The angles between the mean plane of the prop-2-en-1-one group and the 4-bromo­phenyl and 2-meth­oxy­phenyl ring planes are 18.8 (1) and 6.0 (1)°, respectively

8-Bromo-1,3-diphenyl-2,3-dihydro-1H-naphtho­[1,2-e][1,3]oxazine

The title compound, C24H18BrNO, consists of an envelope-configured oxazine ring with a fused 8-bromo-1,3-diphenyl group and two bonded phenyl rings. The dihedral angles between the mean planes of the 8-bromo-1,3-diphenyl and the phenyl rings are 54.5 (6) and 87.4 (8)°, respectively. The oxazine is essentially coplanar with the 8-bromo-1,3-diphenyl [dihedral angle = 9.4 (1)°]. Weak C—H⋯π inter­actions contribute to the crystal packing

1-[3,5-Bis(4-chloro­phen­yl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone

In the title compound, C17H14Cl2N2O, the dihedral angles between the pyrazole ring and the mean planes of the benzene and chloro-substituted benzene rings are 75.97 (1) and 16.63 (1)° respectively. In the crystal, two weak C—H⋯O inter­molecular hydrogen bonds and π–π stacking inter­actions [centroid–centroid distances = 3.774 (4) and 3.716 (7) Å] are observed

N-[(2-Chloro-3-quinol­yl)meth­yl]-4-fluoro­aniline

In the title compound, C16H12ClFN2, the dihedral angle between the quinoline ring system and the flourophenyl ring is 86.70 (4)°. In the crystal, mol­ecules are linked into chains along the a axis by N—H⋯N hydrogen bonds. In addition, C—H⋯π inter­actions involving the two benzene rings are observed

1-(10H-Pheno­thia­zin-2-yl)ethanone

In the title compound, C14H11NOS, the thia­zine ring adopts a slightly distorted boat conformation. The dihedral angle between the mean planes of the two benzene rings is 20.2 (9)°. An inter­molecular N—H⋯O hydrogen bond and a weak C—H⋯π inter­action occur in the crystal, creating a two-dimensional network parallel to the bc plane

Opipramol dipicrate

In the crystal structure of the title compound, C\sb 23H\sb 31N\sb 3O\sp 2+⋅2C\sb 6H\sb 2N\sb 3O\sb 7\sp -}}, systematic name: 1-3-(5{\it H}-dibenz\it b,\it f]azepin-5-yl)prop\-yl]-4-(2-hy\-droxy\-eth\-yl)piperazine-1,4-diium bis\-(2,4,6-trinitro\-phrenolate) the piperazine group in the opipramol dication is protonated at both N atoms. Each picrate anion inter\-acts with the protonated N atom in the cation through a bifurcated N—-H⋅sO hydrogen bond, forming an \it R\sb 2\sp 1(6) ring motif. In the cation, the dihedral angle between the mean planes of the two benzene rings is 50.81(8)Å. Inter\-molecular O—-H⋅sO and weak C—-H⋅sO hydrogen bonds, and weak π-ring and π—π stacking inter\-actions dominate the crystal packing