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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
The title compound, C22H18N8S2, was synthesized by the reaction of α,α′-dibromo-p-xylene and 1-phenyl-5-thio-1,2,3,4-tetrazole. In the molecule, the two tetrazole rings are almost parallel, making a dihedral angle of 9.8 (3)°. The two terminal phenyl rings attached to the tetrazole rings are perpendicular to the central benzene ring.
organic compounds
This paper reports the synthesis of the title compound, C7H8Cl2N4O, and its crystal structure. The molecule possesses a mirror plane and the morpholine ring adopts a chair conformation.
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, C14H11Br2N, was synthesized by N-alkylation of bromoethane with 3,6-dibromo-9H-carbazole. The carbazole ring system is essentially planar and makes a dihedral angle of 94.7 (3)° with the plane formed by the ethyl C and carbazole N atoms.
organic compounds
In the title structure, C18H18N2O2, the piperazine ring adopts a chair conformation and the two phenyl rings are parallel. The molecule possesses a crystallographically imposed inversion centre. In the crystal structure, weak intermolecular C—H
O hydrogen bonds link the molecules into ribbons along the b axis.
O hydrogen bonds link the molecules into ribbons along the b axis.organic compounds
The title compound, C20H22N8O2S2, contains a center of inversion at the mid-point of the central C-C bond. The mean planes of the phenyl and the 1H-tetrazol-5-ylsulfanyl rings make a dihedral angle of 53.95 (16)°.
organic compounds
The title compound, C8H10N2O2, is nearly planar. The crystal packing is stabilized by N—HN hydrogen bonds.
N hydrogen bonds.organic compounds
The title compound, C14H10Cl2N2, possesses a crystallographically imposed center of symmetry at the mid-point of the N-N bond and assumes a planar structure.
organic compounds
Two independent molecules comprise the asymmetric unit of the title compound, C19H13Br2N, which was synthesized by N-alkylation of benzyl bromide with 3,6-dibromo-9H-carbazole. The carbazole ring system is essentially planar and forms a dihedral angle with the pendant phenyl ring of 66.0 (2)° [70.6 (2)° for the second molecule]. In the crystal structure, π–π interactions and weak C—HBr interactions are observed.
Br interactions are observed.organic compounds
The title compound, C16H16N2O4, was synthesized by the reaction of 3-hydroxy-4-methoxybenzaldehyde with hydrazine hydrate. The molecule possesses a crystallographically imposed centre of symmetry. An intramolecular O—HO hydrogen bond promotes planarity of the molecular backbone. In the crystal structure, intermolecular O—HN and C—HO hydrogen bonds stabilize the crystal packing.
O hydrogen bond promotes planarity of the molecular backbone. In the crystal structure, intermolecular O—HN and C—HO hydrogen bonds stabilize the crystal packing.organic compounds
The title compound, C14H10N4O4, was synthesized by the reaction of 3-nitrobenzaldehyde with hydrazine hydrate. The molecule possesses a crystallographically imposed center of symmetry and is essentially planar; the dihedral angle between the nitro group and the benzene ring is 3.4 (2)°. Intermolecular C—HO hydrogen bonds link the molecules into an infinite chain.
O hydrogen bonds link the molecules into an infinite chain.organic compounds
Two independent ion pairs comprise the asymmetric unit of the title compound, C6H16N+·C18H14ClN2O2−. The pyrazole ring, the methylbenzene ring and the chlorobenzene ring are each essentially planar. The dihedral angles between the two benzene rings are 97.6 (3) and 97.1 (3)° for the two anions. Weak N—HO interactions are observed in the crystal structure.
O interactions are observed in the crystal structure.organic compounds
In the title compound, C22H15ClN2O2, the molecular structure is stabilized by intramolecular C—HO and C—HN hydrogen bonds. Intermolecular C—HO hydrogen bonds link the molecules into dimers.
O and C—HN hydrogen bonds. Intermolecular C—HO hydrogen bonds link the molecules into dimers.organic compounds
The title compound, C18H19Br2N, was synthesized by N-alkylation of 1-bromohexane with 3,6-dibromo-9H-carbazole. The carbazole ring system is essentially planar and the n-hexyl chain is in the fully extended conformation.
organic compounds
The molecular structure of the title compound, C16H9BrF4N2O3S, is stabilized by an intramolecular C—HO hydrogen bond. In the crystal structure, supramolecular layers are formed parallel to the bc plane by an intermolecular C—HF hydrogen bond. The CF3 group was found to be disordered.
O hydrogen bond. In the crystal structure, supramolecular layers are formed parallel to the bc plane by an intermolecular C—HF hydrogen bond. The CF3 group was found to be disordered.
