organic compounds
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In the title compound, C18H13ClN2OS·CH3OH, the dihedral angle between the benzimidazole group and the naphthyloxy moiety [82.89 (5)°] very near to orthogonality. The H atom in the five-membered ring is disordered with equal occupancies at the two N atoms and the H atom of the methanolic hydroxy group is disordered with equal occupancies over two sites at the O atom. The methanol molecule acts as a hydrogen-bond acceptor for the amino H atom and donates a hydrogen bond to the nonprotonated ring N atom. As a result, chains are formed running along the a axis.
organic compounds
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The asymmetric unit of the title compound, C17H14N2S, consists of two crystallographically independent molecules with similar conformations. The dihedral angles between the phenyl rings are 89.32 (5) and 82.80 (5)° in the two molecules. In the crystal, molecules are linked by C—Hπ interactions, forming a three-dimensional network.
organic compounds
Open access
The asymmetric unit of the title compound, C19H23FN3O3+·Cl−·2H2O [systematic name: 4-(3-carboxy-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinolin-7-yl)-1-ethylpiperazin-1-ium chloride dihydrate], consists of two independent monocations of the protonated enrofloxacin, two chloride anions and four water molecules. In the cations, the piperazinium rings adopt chair conformations and the dihedral angles between the cyclopropyl ring and the 10-membered quinoline ring system are 56.55 (2) and 51.11 (2)°. An intramolecular O—HO hydrogen bond is observed in each cation. In the crystal, the components are connected via O—HCl, N—HCl and O—HO hydrogen bonds, and a π–π interaction between the benzene rings [centroid–centroid distance = 3.6726 (13) Å], resulting in a three-dimensional array.
data reports
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The title compound, C19H15N3O2, shows an E conformation of the imine bond. The dihedral angle between the planes of the phenyl rings in the diphenylhydrazine groups is 88.52 (4)°. The 2-nitrobenzene ring shows a torsion angle of 10.17 (8)° with the C=N—N plane. A short intramolecular C—HO contact occurs. In the crystal, only van der Waals contacts occur between the molecules.
data reports
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The molecular conformation of the title compound, C14H18N2O3S2, is stabilized by intramolecular N—HN and C—HO hydrogen bonds. The crystal packing is characterized by a series of C—HO hydrogen bonds, resulting in a three-dimensional network.