The asymmetric unit of the title compound, C24H27N3O4, contains two molecules, A and B. The benzimidazole rings are essentially planar [maximum deviations = 0.0144 (10) and 0.0311 (8) Å in A and B, respectively]. The dihedral angle between the benzimidazole mean plane and its attached benzene ring is 36.90 (5) ° for molecule A and 51.40 (5) ° for molecule B. In both molecules, the pyrrolidine ring adopts an envelope conformation with a C atom as the flap. In molecule B, the flap C atom is disordered over two positions in a 0.711 (6):0.289 (6) ratio. In the crystal, C—H⋯O interactions link the molecules, generating  chains. The crystal packing also features weak π–π interactions between the imidazole and benzene rings [centroid–centroid distances = 3.8007 (7) and 3.8086 (7) Å] and between the benzene rings [centroid–centroid distance = 3.7001 (7) Å] and C—H⋯π interactions involving the benzene rings.
The asymmetric unit of the title compound, C27H32N4O4·H2O, contains two independent benzimidazole-5-carboxylate molecules and two water molecules. In both main molecules, the pyrrolidine rings are in an envelope conformation with a methylene C atom as the flap. The morpholine rings adopt chair conformations. Both benzimidazole rings are essentially planar, with maximum deviations of 0.008 (1) Å, and form dihedral angles of 37.65 (6) and 45.44 (6)° with the benzene rings. In one molecule, an intramolecular C—H⋯O hydrogen bond forms an S(7) ring motif. In the crystal, O—H⋯O and O—H⋯N hydrogen bonds connect pairs of main molecules and pairs of water molecules into two independent centrosymmetric four-compoment aggregates. These aggregates are connect by C—H⋯O hydrogen bonds leading to the formation of a three-dimensional network, which is stabilized by C—H⋯π interactions.
In the title compound, C24H25N3O5, the benzimidazole and benzodioxole ring systems are each approximately planar [maximum deviations = 0.043 (1) and 0.036 (1) Å, respectively]. Their mean planes form a dihedral angle of 42.85 (4)°. The pyrrolidine ring has an envelope conformation with one of the methylene C atoms forming the flap. In the crystal, weak C—H⋯O hydrogen bonds link the molecules into a three-dimensional network. The crystal packing is further stabillized by weak π–π interactions between the benzene rings within the benzimidazole ring system [centroid–centroid distance = 3.7955 (7) Å]. A weak C—H⋯π interaction involving the benzodioxole ring is also present.
In the title compound, C23H24N4O5, the essentially planar benzimidazole ring system [maximum deviation = 0.008 (2) Å] forms a dihedral angle of 39.22 (7)° with the attached nitrobenzene ring. The pyrrolidin-2-one ring adopts an envelope conformation with a C atom as the flap. In the crystal, molecules are connected by C—H⋯O interactions, forming sheets propagating in (011). The crystal packing also features weak π–π stacking interactions [centroid–centroid = 3.6746 (12) Å].
In the title molecule, C19H20N2O4·H2O, the benzimidazole ring system is essentially planar [maximum deviation = 0.013 (11) Å] and is inclined to the 4-methoxyphenyl ring by 30.98 (5)°. In the crystal, O—H⋯O and O—H⋯N hydrogen bonds involving the water molecule link neighbouring molecules, forming a two-dimensional network lying parallel to the bc plane. There are also C—H⋯π and π–π interactions present. The latter involve inversion-related benzimidazole rings with centroid–centroid distances of 3.5552 (8) and 3.7466 (8) Å.
The title compound, C18H16O7·H2O, is a flavonoid isolated from Dodonaea viscosa. The benzopyran ring system of the flavonoid is essentially planar [maximum deviation = 0.025 (2) Å] and inclined at 5.83 (2)° to the attached benzene ring. The water of hydration is involved in extensive hydrogen bonding, assembling the molecules into a supramolecular network via classical intermolecular O—H⋯O hydrogen bonding. The crystal structure is further stabilized by π–π stacking interactions [centroid–centroid distance between benzene rings = 3.564 (3) Å].
In the title compound, C24H25N3O5, the ethoxy group is disordered over two orientations in a 0.853 (14):0.147 (14) ratio. The benzimadazole ring system (r.m.s. deviation = 0.016 Å) makes a dihedral angle of 35.47 (7)° with the attached benzene ring. The pyrrolidine ring adopts an envelope conformation with a methylene C atom as the flap. In the crystal, inversion dimers linked by pairs of O—H⋯N hydrogen bonds generate R
2(16) loops. C—H⋯O interactions link the dimers into a three-dimensional network.
In the title compound, C23H25N3O3, the benzimidazole ring system is essentially planar [maximum deviation = 0.0240 (18) Å]. The mean plane through this ring system forms a dihedral angle of 42.23 (7)° with the benzene ring. The pyrrolidine ring is in an envelope conformation with the flap atom disordered over two sites with occupancies of 0.813 (11) and 0.187 (11). In the crystal, weak C—H⋯O hydrogen bonds form R
2(10) ring motifs, which are connected by further C—H⋯O interactions, forming ribbons along the b axis. The crystal structure is further stabilized by weak π–π interactions involving the imidazole and benzene rings of the benzimidazole ring system [centroid–centroid distances = 3.6788 (11) and 3.6316 (10) Å] and weak C—H⋯π interactions.
The title compound, C19H19ClO5, is a chloro derivative of a biologically significant chalcone family. The mean plane of the two substituted benzene rings are twisted by 55.33 (8)° with respect to each other. An intramolecular C—H⋯Cl hydrogen bond generates an S(5) graph-set motif. In the crystal, a bifurcated O—H⋯(O,O) hydrogen bond leads to an R
2(5) graph-set motif and to the formation of zigzag chains propagating along the c-axis direction. A weak π–π interaction involving the methylphenyl rings [centroid–centroid distance = 3.8185 (10) Å] and C—H⋯π interactions also occur.
In the title compound, C35H32N4O4, the pyrazole ring forms a dihedral angle of 15.04 (8)° with the adjacent pyrimidine ring. The pyrimidine ring forms dihedral angles of 9.95 (8) and 1.86 (7)° with its adjacent methoxy-substituted benzene rings, whereas the equivalent angles are 80.24 (9) and 11.55 (9)° for the pyrazole ring and its adjacent benzene rings. The crystal packing features π–π interactions, the centroid–centroid distance between the pyrimidine and methoxyphenyl rings being 3.604 (1) Å. The pyrazole ring is nearly planar, with a maximum deviation of 0.020 (3) Å for the –CH2– carbon.
In the title compound, C36H32N2O4S, the piperidine ring adopts a chair conformation, while the five-membered pyrrolidine (with a C atom as the flap atom) and thiazolidine (with the S atom as the flap atom) rings adopt envelope conformations. The naphthalene ring system makes dihedral angles of 18.82 (5) and 40.92 (5)° with the two methoxy-substituted benzene rings. In the crystal, centrosymmetrically-related molecules are linked into dimers via pairs of C—H⋯O and C—H⋯N hydrogen bonds. An intramolecular O—H⋯N hydrogen bond is also observed. The crystal structure is further stabilized by C—H⋯π interactions.
In the title compound, C34H32N2O8, one of the pyrrolidine rings in the pyrrolizidine ring system adopts a twist conformation, whereas the other ring adopts an envelope conformation (C atom as flap). The five-membered ring in the indene ring system and the fused furan ring also adopt envelope conformations (C and O atoms as flaps, respectively). The β-lactam ring makes dihedral angles of 23.41 (2) and 25.98 (2)°, respectively, with the attached methoxyphenyl and phenoxy rings. The molecular conformation is stabilized by an intramolecular O—H⋯N hydrogen bond, generating an S(5) motif. In the crystal, molecules are linked into C(12) chains running along the a axis by C—H⋯O hydrogen bonds. The structure is further consolidated by weak intermolecular C—H⋯π and π–π interactions [centroid–centroid distance = 3.7987 (14) Å].
In the title compound, C34H32N2O7, the furan ring adopts a twist conformation and both the pyrrolidine rings adopt envelope conformations with O and C as flap atoms. The β-lactam ring makes a dihedral angles of 80.20 (10)° with the furan ring, of 75.55 (10)° with the pyrrolidine ring, of 12.26 (10)° with the methoxyphenyl ring and of 73.77 (13)° with the phenyl ring. The O atom attached to the β-lactam ring deviates by 0.0385 (13) Å from the ring plane. The molecular conformation is stabilized by intramolecular O—H⋯N and C—H⋯O hydrogen bonds. The packing of the crystal is stabilized by intermolecular C—H⋯O hydrogen bonds, which form a chain running along the b axis.
In the title compound, C14H21N2Si+·Br−·H2O, the benzimidazole ring system is almost planar [maximum deviation = 0.021 (2) Å]. In the crystal, O—H⋯Br and C—H⋯O hydrogen bonds link the ions via the O atoms of the water molecules. In addition, there are π–π stacking interactions between the centroids of the benzene and imidazole rings of the benzimidazole ring system [centroid–centroid distances = 3.521 (3) and 3.575 (2) Å].
In the title compound, C25H27N2
+·Br−·H2O, the benzimidazole unit is essentially planar, with a maximum deviation of 0.020 (6) Å. The benzimidazole unit makes dihedral angles of 83.6 (3) and 81.0 (3)° with the two terminal phenyl rings. The dihedral angle between the phenyl rings is 58.5 (4)°. In the crystal structure, there are C—H⋯O hydrogen bonds, a C—H⋯π interaction between a phenyl H atom and the phenyl ring of a neighbouring molecule, and a π–π interaction [3.512 (3) Å] between the centroids of the five-membered ring and the benzene ring of the benzimidazole unit of an adjacent molecule.
In the title compound, C16H16O2S, the central propenone group is almost planar (r.m.s. deviation = 0.009 Å) and subtends dihedral angles of 8.55 (8) and 16.22 (8)° to the 2-methoxyphenyl and 2,5-dimethylthiophene residues, respectively. The dihedral angle between the ring systems is 23.47 (5)°. In the crystal, molecules are linked by weak C—H⋯π interactions and aromatic π–π stacking [phenyl ring centroid–centroid separation = 3.6418 (11) Å; thiophene–thiophene ring separation = 3.8727 (9) Å].
There are two independent molecules in the asymmetric unit of the title compound, C16H11Cl2FO2. The F atom equally populates both meta positions of the 6-dichloro-3-fluorophenyl ring in each molecule, resulting in 0.5 occupancy for both the F and H atoms in these positions. The dihedral angle between the mean planes of the benzene rings are 77.5 (2) and 89.8 (8)°in the two molecules. In the crystal, weak C—H⋯F and C—H⋯O interactions involving the half-occupied H and F atoms are observed. Weak π–π stacking interactions [centroid—centroid distance = 3.150 (2) Å] also contribute to the crystal stability.
Molecules of the title compound, C23H30N2O4, are located on a crystallographic mirror plane. The molecule has a curved shape with the dihedral angle formed between the two benzene rings being 55.26 (5)°. Intramolecular O—H⋯N hydrogen bonds are noted. In the crystal, supramolecular layers are formed in the ac plane owing to the presence of C—H⋯π interactions.
In the title molecule, C24H32O10, one tert-butyl ester group is folded towards the central benzene ring while the other is directed away. The acetyl group is almost perpendicular to the benzene ring to which it is connected [C—C—O—C torsion angle = 90.4 (12)°]. The conformation about the ethene bond [1.313 (7) Å] is E. The atoms of the benzene ring and its attached ester group and part of the hydroxy tert-butyl ester side chain are disordered over two sets of sites in a 50:50 ratio. Linear supramolecular chains along the a axis mediated by hydroxy–carbonyl O—H⋯O hydrogen bonds feature in the crystal packing. The same H atom also partakes in an intramolecular O—H⋯O interaction.
The title benzophenone compound, C14H12O6·H2O, was isolated from the bark of Garcinia hombroniana Pierre (Guttiferae). The molecule is twisted, the dihedral angle between the two benzene rings being 59.13 (7)°. The methoxy group is approximately coplanar with the attached benzene ring, with a C—O—C—C torsion angle of 1.91 (18)°. The water molecule is disordered over two positions in a 0.555 (19):0.445 (19) ratio. An intramolecular O—H⋯O hydrogen bond generates an S(6) ring motif. The crystal structure is stabilized by intermolecular O—H⋯O hydrogen bonds. These interactions link the molecules into sheets parallel to the ac plane. The sheets are stacked along the b axis by π–π interactions, with centroid–centroid distances of 3.6219 (7) Å. A weak O—H⋯π interaction was also noted.
In the title compound, C22H24O5, each of the cyclohexenone rings adopts a half-chair conformation. The hydroxy and carbonyl O atoms face each other and are orientated to allow for the formation of the two intramolecular O—H⋯O hydrogen bonds which are typical of xanthene derivatives. In the crystal, weak intermolecular C—H⋯O hydrogen bonds link molecules into layers parallel to the ab plane.
In the title compound, C14H14O4, the dihedral angle between the hydrofuran and benzene rings is 88.41 (15)°. The hydropyran ring adopts an envelope conformation, with the O-bound methylene C atom as the flap. In the crystal, weak aromatic π–π stacking is observed [centroid–centroid separation = 3.848 (2) Å].
In the title compound, C29H28N4O3, the pyrrolidine ring adopts a twist conformation whereas the oxindole and benzimidazole residues are approximately planar with maximum deviations of 0.159 (1) and 0.011 (1) Å, respectively. The oxindole residue is almost perpendicular to the benzimidazole residue, making a dihedral angle of 89.2 (1)°. The methyl-substituted benzene ring is oriented at angles of 47.7 (1) and 71.0 (1)°, respectively, with respect to the oxindole and benzimidazole residues. An intramolecular C—H⋯O hydrogen bond is observed. In the crystal, molecules associate via N—H⋯N hydrogen bonds, forming R
In the title compound, C24H20N2O3, the mean plane of the benzimidazole unit makes dihedral angles of 79.88 (11) and 85.44 (12)° with the benzene and 4-methoxybenzene rings, respectively. The benzene and 4-methoxybenzene rings maske a dihedral angle of 16.10 (14)°. A pair of intermolecular N—H⋯O hydrogen bonds connects adjacent molecules into an inversion dimer, generating an R
2(26) ring motif. The crystal structure is further stabilized by C—H⋯π interactions.
The title compound, C29H22F2O3, is a meta-terphenyl derivative featuring a Michael-system-derived substituent with an E-configured C=C function. In the crystal, C—H⋯O and C—H⋯F contacts connect the molecules into planes parallel to (101). The shortest centroid–centroid distance between two aromatic systems is 3.7169 (7) Å and is apparent between the terminal benzene ring of the Michael-system-derived substituent and its symmetry-generated equivalent.