In the title compound, C23H15BrO3, the anthracene ring system is essentially planar [maximum deviation = 0.29 (2) Å] and makes a dihedral angle of 5.74 (8)° with the mean plane of the bromo-substituted benzene ring. An intramolecular C—H⋯O hydrogen bond generates an S(9) ring motif. In the crystal, molecules are linked by C—H⋯O interactions, forming a two-dimensional network parallel to the ac plane. π–π stacking interactions are observed between benzene rings [centroid–centroid distances = 3.5949 (14) and 3.5960 (13) Å].
In the title compound, C16H13BrO3, the dihedral angle formed between the bromo- and methyl-substituted benzene rings is 66.66 (8)°. In the crystal, molecules are linked by intermolecular C—H⋯O hydrogen bonds, forming a two-dimensional network parallel to the ac plane. The crystal packing is further consolidated by C—H⋯π interactions.
In the title compound, C22H27BrO3, the cyclohexane ring adopts a chair conformation. The dihedral angle between the benzene rings is 41.9 (4)°. In the crystal, molecules are linked by O—H⋯O and C—H⋯O hydrogen bonds, forming a three-dimensional network. In addition, π–π stacking interactions [centroid–centroid distance = 3.953 (6) Å] between the benzene rings of the methoxybenzene groups occur.
The asymmetric unit of the title compound, C15H10Br2O3, consists of three crystallographically independent molecules (A, B and C). The phenyl rings in molecules A, B and C make dihedral angles of 6.1 (3), 3.2 (2) and 54.6 (2)° to each other, respectively. In the crystal, molecules are linked into two-dimensional layers parallel to the ab plane by intermolecular C—H⋯O hydrogen bonds. The crystal structure is further stabilized by C—H⋯π interactions. The studied crystal is an inversion twin, the refined ratio of the twin components being 0.128 (8):0.872 (8).
In the title compound, C16H13BrO4, the benzene rings are almost perpendicular to each other, making a dihedral angle of 84.07 (8)°. In the crystal, the molecules are linked into chains along the a axis via intermolecular C—H⋯O hydrogen bonds. A C—H⋯π interaction is also observed.
The asymmetric unit of the title compound, C15H10BrNO4S, contains two different conformers in which the benzisothiazole rings are essentially planar, with r.m.s. deviations of 0.012 and 0.017 Å. The mean planes of the benzene rings form dihedral angles 70.49 (13) and 72.79 (11)° with the benzisothiazole rings. The orientation of the Br atoms in the two conformers exhibit the most pronounced difference, with opposing orientations in the two molecules. The crystal structure is stabilized by π–π interactions between the benzene rings of the benzisothiazole moieties of one molecule and bromobenzene rings of the other molecule, with distances between the ring centroids of 3.599 (3) and 3.620 (3) Å, respectively. The crystal packing is further consolidated by pairs of weak intermolecular C—H⋯O hydrogen bonds, which form inversion dimers.
In the title 1:1 co-crystal, C10H7BrN4S·C7H5BrO2, the triazolothiadiazole system is approximately planar [with a maximum deviation of 0.030 (4) Å] and forms a dihedral angle of 8.6 (1)° with the bromophenyl ring. In the carboxylic acid molecule, the carboxyl group is rotated by 6.4 (3)° out of the benzene ring plane. The crystal structure features O—H⋯N and C—H⋯O hydrogen bonds, π–π stacking interactions [centroid–centroid distances = 3.713 (2), 3.670 (2) and 3.859 (3) Å] and short S⋯N [2.883 (4) Å] contacts.
The molecule of the title chalcone, C23H15BrO, is not planar and exists in the E configuration with respect to the central C=C bond. The dihedral angle between the benzene and anthracene rings is 83.58 (6)°. The prop-2-en-1-one bridge makes dihedral angles of 63.00 (7) and 42.62 (16)° with the benzene and anthracene rings, respectively. In the crystal, molecules are linked into dimers by weak C—H⋯O interactions. These dimers are arranged parallel to the bc plane and are further stacked along the a axis by π–π interactions with a centroid–centroid distance of 3.7561 (9) Å. The crystal structure is further stabilized by C—H⋯π interactions.
In the title molecule, C26H16BrN3O3, the anthracene and benzene mean planes make dihedral angles of 63.79 (2) and 14.67 (2)°, respectively, with the plane of the imidazole ring. In the crystal structure, weak intermolecular C—H⋯O hydrogen bonds link molecules to form centrosymmetric dimers. Weak π–π stacking interactions, with centroid–centroid distances of 3.779 (2) and 3.826 (2) Å, supply additional stabilization. The crystal packing also exhibits short intermolecular contacts between the nitro groups and Br atoms [Br⋯O = 3.114 (2) Å].
In the title molecule, C14H11BrClNO2, the dihedral angle between the mean planes of the bromo-substitued benzene and the chloro-substituted benzene rings is 1.8 (4) °. The nitro group is twisted by 15.8 (6)° from the mean plane of the benzene ring to which it is attached. The crystal packing is influenced by weak intermolecular C—H⋯O interactions and weak π–π stacking interactions [centroid–centroid distances = 3.903 (2), 3.596 (2) and 3.903 (2) Å].
In the title compound, C15H13BrN2O2, the two aromatic rings form a dihedral angle of 7.9 (1)° and an intramolecular N—H⋯O hydrogen bond influences the molecular conformation. In the crystal, intermolecular O—H⋯O hydrogen bonds link the molecules into chains propagated in . The crystal packing exhibits also π–π interactions, which pair molecules into centrosymmetric dimers with short intermolecular distances of 3.671 (4) Å between the centroids of aromatic rings.
The title compound, C14H11BrN4O4, contains 3-bromophenyl and 2,4-dinitrophenyl groups on opposite sides of a hydrazone unit and crystallizes with two molecules in the asymmetric unit. The dihedral angles between the two ring systems in each molecule are 2.0 (1) and 2.5 (4)°. Weak C—H⋯O hydrogen bonds and weak π–π stacking interactions [centroid–centroid distance = 3.7269 (14) Å] help to establish the packing. Intramolecular N—H⋯O hydrogen bonds are also observed. On one of the rings, the Br atom is disordered over two equivalent positions of the phenyl ring [occupancy ratio 0.8734 (10):0.1266 (10).
The title compound, C24H18BrF3N4O4, is a 1,2,3-triazole derivative featuring, among others, a quinoline-derived substituent. In the crystal, C—H⋯O, C—H⋯N and C—H⋯F contacts connect the molecules into a three-dimensional network. The shortest centroid–centroid distance between two aromatic systems is 3.896 (2) Å and is found between the two different six-membered rings of the quinoline scaffold in neighbouring molecules.
In the title molecule, C16H13BrO4, the dihedral angle between the benzene rings is 85.92 (10)°. In the crystal, molecules are linked into chains along  via weak intermolecular C—H⋯O hydrogen bonds.
The title compound, C16H13BrO3, consists of a toluene ring and a bromobenzene ring which are linked together by a 2-oxopropyl acetate group. The dihedral angle formed between the toluene and bromobenzene rings is 80.70 (7)°. In the crystal, intermolecular C—H⋯O hydrogen bonds link the molecules into a three-dimensional network.
In the title compound, C24H15BrO2S, the sulfinyl O atom and the phenyl group of the phenylsulfinyl substituent lie on opposite sides of the plane through the naphthofuran fragment. The phenyl ring is nearly perpendicular to the plane of the tricyclic naphthofuran system [81.77 (6)°] and is tilted slightly towards it. The 4-bromophenyl ring is rotated out of the naphthofuran plane by a dihedral angle of 31.12 (4)°. In the crystal structure, non-classical intermolecular C—H⋯O and C—H⋯Br hydrogen bonds are observed. The crystal structure also exhibits aromatic π–π interactions between the furan ring and the central benzene ring of the adjacent naphthofuran system [centroid–centroid distance = 3.768 (3) Å]. In addition, intermolecular C—Br⋯π interactions [3.866 (2) Å] between the Br atom and the phenyl ring of the phenylsulfinyl substituent are present.
In the title compound, C20H12BrFO2S, the O atom and the phenyl group of the phenylsulfinyl substituent lie on opposite sides of the plane through the benzofuran fragment; the phenyl ring is nearly perpendicular to this plane [dihedral angle = 86.98 (6)°]. The 4-bromophenyl ring is rotated slightly out of the benzofuran plane, making a dihedral angle of 1.56 (8)°. The crystal structure features aromatic π–π interactions between the furan and phenyl rings of neighbouring molecules [centroid–centroid distance = 3.506 (3) Å], and an intermolecular C—H⋯π interaction. The crystal structure also exhibits a short intermolecular S⋯S contact [3.2635 (8) Å].
In the title compound, C18H11BrN6, the phenyl ring is almost coplanar [dihedral angle 7.2 (1)°] with the planar (r.m.s. deviation 0.039 Å) tricyclic ring system while the 4-bromophenyl ring makes a dihedral angle of 33.98 (6)° with the ring system. Weak intermolecular C—H⋯N and C—H⋯Br hydrogen-bonding interactions and π–π stacking [centroid–centroid distances = 3.7971 (17) and 3.5599 (16) Å] stabilize the crystal packing. A comparison of the structure to a MOPAC PM3 geometry optimization calculation in vacuo supports these observations.
In the title compound, C14H11BrN4, the fused benzene and pyrimidine rings are nearly coplanar, making dihedral angles of 1.26 (14) and 3.53 (15)° in the two independent molecules. In the crystal structure, π–π stacking interactions [centroid–centroid distances = 3.4736 (19) and 3.5416 (19) Å] and weak N—H⋯N and N—H⋯Br interactions contribute to the stability of the structure.
The title compound, C17H15BrO3, is a chalcone with the 2-bromophenyl and 2,5-dimethoxyphenyl rings bonded at opposite ends of a propene group. The dihedral angle between the mean planes of the ortho-bromo and ortho,meta-dimethoxy-substituted benzene rings is 77.3 (1)°. The dihedral angles between the mean plane of the prop-2-ene-1-one group and the mean planes of the 2-bromophenyl and 2,5-dimethoxyphenyl rings are 58.6 (1) and 30.7 (4)°, respectively. Weak C—H⋯O, C—H⋯Br and π–π stacking intermolecular interactions [centroid–centroid distance = 3.650 (2) Å] are present in the structure.
In the title compound, C16H14BrN3O2S, the atoms of the 1,3-thiazolidine group, except for the N and the C atoms attached to the bromobenzene ring, are disordered over two sets of sites with occupancies of 0.605 (13) and 0.395 (13). The benzene and pyridine rings make a dihedral angle of 86.2 (2)°. In the crystal, molecules are linked by intermolecular N—H⋯N and C—H⋯O hydrogen bonds, forming a three-dimensional network. Furthermore, there is a π–π stacking interaction [centroid–centroid distance = 3.758 (2) Å] between the pyridine and benzene rings.
The title molecule, C13H8BrN3O5, is slightly twisted, with the dihedral angle between the two benzene rings being 5.9 (1)°. In the crystal, N—H⋯O hydrogen bonds link the molecules into one-dimensional chains running along . Further stabilization of the crystal structure is provided by π–π interactions [shortest centroid–centroid distance = 3.6467 (17) Å].
In the title molecule, C21H14BrFN4O4, the mean planes of the two nitro groups form dihedral angles of 3.1 (2) and 7.1 (5)° with the benzene ring to which they are attached. The dinitro-substituted ring forms dihedral angles of 8.6 (2) and 71.9 (2)° with the bromo- and fluoro-substituted benzene rings, respectively. The dihedral angle between the bromo- and fluoro-substituted benzene rings is 80.6 (2)°. There is an intramolecular N—H⋯O hydrogen bond. In the crystal, pairs of weak C—H⋯O hydrogen bonds form inversion dimers. In addition, π–π stacking interactions between the bromo- and dinitro-substituted rings [centroid–centroid separation = 3.768 (2) Å] are observed.
There are two crystallographically independent molecules in the asymmetric unit of the title compound, C18H12Br2N2O. In each molecule, one of the bromophenyl rings lies almost in the plane of pyrazole unit [dihedral angles of 5.8 (3)° in the first molecule and and 5.1 (3)° in the second] while the other ring is approximately perpendicular to it [dihedral angles of 80.3 (3) and 76.5 (3)°]. The crystal packing shows intermolecular C—H⋯O interactions. The crystal studied was a racemic twin.
In the title molecule, C15H10BrNO4S, the heterocyclic thiazine ring adopts a half-chair conformation, with the S and N atoms displaced by 0.554 (7) and 0.198 (8) Å, respectively, on opposite sides of the mean plane formed by the remaining ring atoms. The molecular structure is consolidated by intramolecular O—H⋯O interactions and the crystal packing features N—H⋯O and C—H⋯O hydrogen bonds.