In the title compound, C35H28Br2N2O2, the piperidone ring adopts a chair conformation and the five-membered ring of the pyrrolidine ring adopts an envelope conformation. The naphthalene ring system makes dihedral angles of 37.12 (8) and 50.62 (9)° with the terminal bromo-substituted benzene rings. The dihedral angle between the two bromo-substituted benzene rings is 72.54 (10)°. In the crystal, adjacent molecules are connected by a pair of intermolecular C—H⋯O hydrogen bonds, forming an inversion dimer. An intramolecular O—H⋯N hydrogen bond is also present.
In the title compound, C33H26Br2N2O2, the piperidine group adopts an envelope conformation while the two pyrrolidine groups adopt half-chair and envelope conformations. The dihydroacenaphthylene group is almost planar, with a maximum deviation of 0.105 (1) Å. The dihedral angle between the two bromophenyl rings is 60.19 (8)°. An intramolecular O—H⋯N interaction is observed, generating an S(5) ring motif. The crystal structure is stabilized by intermolecular C—H⋯O interactions. Short Br⋯Br [3.461 (1) Å] and Br⋯C [3.322 (2) Å] intermolecular contacts are observed, as well as π–π interactions [centroid–centroid distance = 3.793 (1) Å].
In the title pyrrolidine compound, C30H24Br2N2O3, the two fused pyrrolidine rings adopt envelope and twisted conformations, whereas the piperidine ring adopts an envelope conformation. The essentially planar 2,3-dihydroindanone unit [maximum deviation = −0.0163 (19) Å] is inclined at interplanar angles of 14.29 (9) and 61.07 (9)° to the two benzene rings. In the crystal, adjacent molecules are linked into dimers by intermolecular O—H⋯N and C—H⋯O hydrogen bonds. Short intermolecular Br⋯Br interactions [3.5140 (6) Å] further interconnect these dimers into double dimeric columns along the b axis.
In the title compound, C18H17NO, the dihydroindene ring system is approximately planar, with a maximum deviation of 0.041 (2) Å. This ring system is almost coplanar with the benzene ring, making a dihedral angle of 5.22 (9)°. In the crystal, intermolecular C—H⋯O hydrogen bonds link the molecules into chains along the b axis.
In the title compound, C16H11ClO, the dihedral angle between the almost planar dihydroindene ring system (r.m.s. deviation = 0.009 Å) and the chlorobenzene ring is 3.51 (14)°. In the crystal, molecules are connected by C—H⋯O and weak C—H⋯Cl interactions, forming infinite layers parallel to (101).
The title compound, [CuI(C19H20Br2N2)], lies across a crystallographic mirror plane. The coordination around the copper centre is distorted trigonal planar, with a bite angle of 94.7 (3)°. A six-membered chelate ring in a chair conformation is formed by the coordination of the imine N atoms of the bidentate ligand to the CuI atom. This conformation is required by the crystallographic mirror symmetry. The interplanar angle between the benzene rings is 74.85 (19)°. The crystal structure exhibits weak intermolecular C—H⋯π interactions, which link the molecules into chains along the b axis.
The title compound, C17H17BrN2O4·CH4O, was synthesized by the condensation of 3,4,5-trimethoxybenzohydrazide and 2-bromobenzaldehyde. The two aromatic rings are approximately planar, the dihedral angle being 3.08 (9)°. The molecules are linked by intermolecular N—H⋯O and O—H⋯O hydrogen bonds into chains along the a axis.
In the title compound, C16H12BrN3O2S, the dihedral angle between the planes of the almost planar (r.m.s. deviation = 0.0263 Å) quinoline group and the bromophenyl group is 87.4 (1)°. The torsion angle of the central S—N—N—C bridge is 144.8 (2)°. The amino group has an intramolecular contact to the quinoline N atom. The structure is stabilized by one N—H⋯O and two C—H⋯O intermolecular hydrogen bonds.
In the title compound, C22H17BrN2O4S, the central dihydropyrimidine ring, with a chiral C atom, is significantly puckered and adopts a half-chair conformation with the chiral C atom displaced from the mean plane of the remaining ring atoms by 0.305 (6) Å. The hydroxy-phenyl ring is positioned axially to the pyrimidine ring and almost bisects it, the dihedral angle between the mean-planes of the two rings being 89.78 (12)°. The methoxycarbonyl group is disordered over two sites with an occupancy ratio of 0.568 (5):0.432 (5), resulting in a major and a minor conformer. In the crystal, O—H⋯N and C—H⋯S interactions result in sheets along the c axis. The supramolecular assembly is stabilized by π–π stacking interactions between the 2-bromobenzylidene and thiazolopyrimidine rings [centroid–centroid distance = 3.632 (1) Å]. In addition, C—H⋯π interactions are also observed in the crystal structure.
The molecule of the title compound, C19H20Br2N2, is a potential bidentate Schiff base ligand. The two benzene rings are inclined at a dihedral angle of 30.85 (8)°. An interesting feature of the crystal structure is a weak intermolecular Br⋯Br [3.4752 (4) Å] interaction which is shorter than the sum of the van der Waals radii of the Br atoms and links neighbouring molecules into chains along the c axis. The crystal structure is further stabilized by intermolecular C—H⋯π interactions.
The title compound, C9H9BrN2O2, crystallizes with two independent but essentially identical molecules in the asymmetric unit. Each molecule adopts a trans configuration with respect to the C=N bond. In one of the molecules, the dihedral angle between the benzene ring and the hydrazinecarboxylic acid plane is 24.9 (2)°, and that in the other molecule is 16.1 (2)°. The molecules are linked into a three-dimensional network via intermolecular N—H⋯O, C—H⋯O, C—H⋯N and C—H⋯Br hydrogen bonds. An intramolecular N—H⋯O hydrogen bond is also present.
The title compound, C10H11BrN2O2, crystallizes with two independent molecules in the asymmetric unit, in which the dihedral angles between the benzene ring and the hydrazine carboxylic acid mean plane are 3.0 (4) and 45.3 (3)°. The molecules are linked into a one-dimensional network by intermolecular N—H⋯O hydrogen bonds.
The title compound, C14H10BrFN2O, adopts an E geometry about the C=N bond. The dihedral angle between the mean planes of the two benzene rings is 81.5 (6)°. In the crystal, molecules are linked through intermolecular N—H⋯O hydrogen bonds, forming chains running along the b axis.
In the title compound, C32H26Cl2N2O3, the piperidone ring adopts a chair conformation and the proline and pyrrolidine rings adopt envelope conformations. The indane ring system is essentially planar with an r.m.s. deviation of 0.011 Å for the non-H atoms. The dihedral angle between the two chloro-substituted benzene rings is 63.69 (10)°. Intramolecular C—H⋯O and N—H⋯O hydrogen bonds may influence the molecular conformation. In the crystal structure, molecules are connected into layers by weak intermolecular C—H⋯O hydrogen bonds.
In the title compound, C17H16BrN3O2S, the two fused rings are twisted by a dihedral angle of 6.61 (15)°. The thiazine ring adopts a sofa conformation. The toluene ring is oriented at dihedral angles of 15.5 (2) and 20.6 (2)° with respect to the bromobenzene and thiazine rings, respectively. The benzylidene system is approximately planar [r.m.s. deviation = 0.0388 Å]. In the cyrstal, weak intermolecular C—H⋯O hydrogen bonds connects the molecules into a chain along the b axis.
In the title compound, C17H11F3O2, the dihydroindene ring is approximately planar with a maximum deviation of 0.024 (2) Å and makes a dihedral angle of 3.17 (8) Å with the adjacent benzene ring. In the crystal, molecules are interconnected by C—H⋯O interactions, forming an infinite chain along the c axis.
The title indan-1-one derivative, C16H11BrO, is planar, the r.m.s. deviation for all 18 non-H atoms being 0.071 Å. The configuration about the C=C bond [1.337 (5) Å] is E. In the crystal, supramolecular layers in the ab plane are formed by C—H⋯O interactions, involving the bifurcated carbonyl O atom, as well as C—H⋯π interactions. The studied crystal was an inversion twin.
The title compound, C13H10BrN3O, was prepared by the reaction of isonicotinohydrazide and 4-bromobenzaldehyde. The dihedral angle between the benzene and pyridine rings is 8.60 (12)°. The crystal packing is stabilized by intermolecular C—H⋯O and N—H⋯O hydogen-bonding interactions.
In the title compound, C12H11BrN2O, the 4-bromobenzaldehyde and 5-amino-3,4-dimethylisoxazole units are oriented at a dihedral angle of 4.89 (8)°. In the crystal, weak π–π interactions are present between the benzene rings at a centroid–centroid distance of 3.7862 (14) Å.
In the title compound, C16H13BrFN3O2S, the dihedral angle between the aromatic rings is 2.55 (19)° and the C=N—N=C torsion angle is 178.9 (3)°. The conformation of the thiazine ring is an envelope, with the S atom displaced by −0.811 (3) Å from the mean plane of the other five atoms (r.m.s. deviation = 0.042 Å). In the crystal, C—H⋯O interactions link the molecules and weak aromatic π–π stacking between the fluorobenzene and bromobenzene rings [centroid–centroid separation = 3.720 (2) Å and interplanar angle = 2.6 (2)°] is also observed.
In the title compound, C14H13BrN2O2S, a novel sulfonamide derivative, intermolecular N—H⋯O and C—H⋯O hydrogen bonds link neighbouring molecules into different dimers along the b axis, generating R
2(8) and R
2(16) ring motifs. The dihedral angle between the benzene rings is 82.39 (13)°. The crystal structure is further stabilized by intermolecular π–π stacking interactions [centroid–centroid distances = 3.867 (2)–3.9548 (8) Å].
The molecule of the title Schiff base compound, C16H14Br2N2, lies across a crystallographic inversion centre. The C=N bond adopts a trans configuration. The imino group is coplanar with the benzene ring. Within the molecule, the planar units are parallel, but extend in opposite directions from the dimethylene bridge. The interesting feature of the structure is the weak Br⋯Br interaction [3.7501 (2) Å] linking the molecules into chains along the c axis. These chains are stacked along the b axis.
In the title compound, C31H22F3NO2, the pyrrolidine and cyclopentane rings within the dihydroindene ring system are in envelope conformations, with the N atom and the spiro-C atom at the flap, respectively. An intramolecular C—H⋯O hydrogen bond forms an S(8) ring motif. The mean plane through the pyrrolidine ring [r.m.s. deviation = 0.179 (2) Å] makes dihedral angles of 86.30 (13), 88.99 (10) and 79.69 (11)° with the benzene ring, the dihydroacenaphthylene ring and the mean plane of the indane system, respectively. In the crystal, molecules are linked by C—H⋯O and C—H⋯N hydrogen bonds into a two-dimensional network parallel to the ac plane. C—H⋯π interactions further stabilize the crystal structure.
In the title compound, C13H10BrNO, the dihedral angle between the benzene rings is 35.20 (8)°. In the crystal, molecules are linked by O—H⋯N hydrogen bonds, forming a zigzag chain along the a axis. A weak C—H⋯π interaction is observed between the chains.
Molecules of the title compound, C16H16N4O7, are not planar with a dihedral angle of 5.50 (11)° between the substituted benzene rings. The two meta-methoxy groups of the 3,4,5-trimethoxybenzene moiety lie in the plane of the attached ring [Cmethyl–O–C–C torsion angles −0.1 (4)° and −3.7 (3)°] while the para-methoxy substituent lies out of the plane [Cmethyl—O—C—C, −86.0 (3)°]. An intramolecular N—H⋯O hydrogen bond involving the 2-nitro substituent generates an S(6) ring motif. In the crystal structure, molecules are linked by weak C—H⋯O interactions into screw chains, that are arranged into a sheet parallel to the bc plane. These sheets are connected by π–π stacking interactions between the nitro and methoxy substituted aromatic rings with a centroid–centroid separation of 3.9420 (13) Å. C—H⋯π contacts further stabilize the two-dimensional network.