organic compounds
The title compound [systematic name: (2S)-1-(2-hydroxy-1-naphthylmethyl)pyrrolidinio-2-carboxylate], C16H17NO3, a derivative of L-proline, was synthesized via the Mannich reaction. The X-ray crystal analysis reveals that the pyrrolidine ring adopts an envelope conformation, with the flap C atom deviating by 0.631 (9) Å from the plane defined by the other four atoms.
organic compounds
The formation of the title compound, (S)-2-ammonio-1-butanol (2R,3R)-tartrate, C4H12NO+·C4H5O6-, the (S)-2-amino-1-butanol molecule is converted to a cationic form containing a positively charged amino group, and the tartaric acid molecule to a mono- or half-ionized tartrate anion. The structure is stabilized by a three-dimensional network of hydrogen bonds.
organic compounds
In the title compound, C22H19NO, the Csp2 atom of the benzimido group reveals a distorted trigonal geometry, which results in the approximately overall trigonal shape of the molecule.
metal-organic compounds
The crystal structure of the title compound, [Cu(C5H5N)2{Cu(CN)4}]n, comprises [Cu(py)2]2+ (py is pyridine) and [Cu(CN)4]2− subunits which are connected through bridging cyano groups to form a three-dimensional network, with Cu atoms located on sites of symmetry 2/m and 222 for the cation and anion, respectively.
organic compounds
In the title structure, C14H10O5, the angle between the planes formed by the 2,4-dihydroxybenzoyl and o-benzoic acid moieties is 87.12 (4)°. In addition to an intramolecular O—HO hydrogen bond, intermolecular O—HO hydrogen bonds (HO = 1.76 and 1.89 Å) connect molecules to form a two-dimensional network parallel to (10).
organic compounds
The title compound, C24H18, possesses a twofold rotation axis, which bisects the 1,2-dimethylbenzene ring. In the crystal structure, all three benzene rings are essentially coplanar, the angle between the central and terminal rings being 3.8 (1)°.
organic compounds
In the title compound, C16H15N3O2, the dihedral angle between the benzotriazole moiety and the other benzene ring is 74.40 (7)°. The short distance [3.488 (3) Å] between the centroids of benzene rings of neighbouring molecules may indicate a π–π interaction, forming centrosymmetric dimers. The packing is further stabilized by van der Waals forces.
organic compounds
The title compound, C21H24N2O3, is a zwitterion of the Cinchona alkaloid complex. In the crystal structure, intermolecular O—HO and C—HO hydrogen bonds link the molecules into one-dimensional double-stranded ladders. The crystal packing is further stabilized by van der Waals forces.
organic compounds
In the title compound, C13H9N3O2, the dihedral angle between the benzimidazole moiety and the benzene ring is 40.08 (6)°. The molecules are linked into chains along the b axis by intermolecular N—HN hydrogen bonds. The chains are interlinked into a two-dimensional network by C—HO hydrogen bonds.
organic compounds
In the title compound, C11H10N4O3, the substituted phenyl ring and the triazole ring make a dihedral angle of 59.7 (2)°. The molecules are linked into zigzag chains by intermolecular C—HO hydrogen bonds. These chains are further connected through C—HN hydrogen bonds to build up a three-dimensional network.
organic compounds
The title compound, C22H18FNO3, was synthesized by the reaction of 1-naphthol with ethyl cyanocaetate and 3-fluorobenzaldehyde in ethanol under microwave irradiation. In the crystal structure, there are intramolecular N—HO hydrogen bonds and intermolecular N—HO and N—HF hydrogen bonds. An intramolecular C—Hπ interaction is also present.
organic compounds
In the title compound, C15H14ClF3N2O2, the benzene and pyrazolyl rings form a dihedral angle of 15.9 (3)°.
organic compounds
The title compound, C15H15N3S, was prepared by the reaction of acetophenone and hydrazine with phenylisothiocyanate. In the molecule, all bond lengths and angles are within normal ranges. The two phenyl rings make a dihedral angle of 61.6 (2)°. The crystal packing is stabilized by van der Waals forces.
organic compounds
The title compound, C13H14ClN5O, was synthesized from 2,4-dichloro-6-morpholino-1,3,5-triazine and aniline. In the crystal structure, there are intermolecular N—HO hydrogen bonds which propagate infinite chains parallel to the c axis. The morpholine ring adopts a chair conformation.
organic compounds
In the title molecule, C21H15NO, the two ethynyl-bridged six-membered rings are almost coplanar, making a dihedral angle of 3.3 (2)°. The dihedral angle between the two terminal phenyl rings is 62.9 (2)°. The crystal packing is stabilized by weak intermolecular N—HO hydrogen bonds.
organic compounds
The structure of the title compound, C13H10O4, which was synthesized by the reaction of salicylaldehyde and 4-hydroxy-6-methyl-2H-pyran-2-one in the presence of triethylbenzylammonium chloride in aqueous media, was previously determined at room temperature [March, Moreno-Manas, Roca, Germain, Piniella & Dideberg (1986). J. Heterocycl. Chem. 23, 1511–1153]. As in the present determination, the X-ray analysis revealed that the title compound is in the enol form, which was confirmed by 1H NMR data. Weak intermolecular C—HO interactions connect molecules into a two-dimensional framework.
organic compounds
The title compound, C15H12N2O3, is non-planar, with a dihedral angle of 83.0 (1)° between the two benzene rings. The molecules are linked into a ribbon along the b axis by intermolecular C—HO and O—HN hydrogen bonds. The packing is further stabilized by C—Hπ and π–π interactions.
organic compounds
The title compound, C16H14N2O2, is non-planar, with a dihedral angle of 13.97 (8)° between the two benzene rings. There exists an intramolecular C—HO hydrogen bond, forming a six-membered ring.