organic compounds
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In the title compound, C21H23NO4S, the dihedral angle between the naphthalene residue and the benzene ring is 7.66 (3)°. In the molecule, there are some short C—HO interactions. In the crystal, the structure is stabilized by weak intramolecular C—HO hydrogen bonds and the crystal structure is stabilized by weak C—HO, C—Hπ and π–π [centroid–centroid distance = 3.710 (2) Å] interactions.
organic compounds
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In the crystal structure of the title compound, C2H8N+·C7H5O3−, the anions and cations are linked by O—HO and N—HO hydrogen bonds into layers parallel to the ac plane.
organic compounds
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The asymmetric unit of the title compound, C19H22ClNO, contains two independent molecules in which the dihedral angles between the aromatic rings are 76.45 (9) and 74.69 (9)°. An intramolecular O—HN hydrogen bond occurs in each molecule. The crystal structure features weak C—Hπ interactions.
organic compounds
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In the title compound, C19H22BrNO, the dihedral angle between the benzene rings is 76.17 (14)° and an intramolecular O—HN hydrogen bond with an S(6) graph-set motif is present. One methyl group is disordered over two sets of sites with site occupancies of 0.66 (3) and 0.34 (3). A weak intermolecular C—Hπ interaction is observed in the crystal structure.
organic compounds
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The asymmetric unit of title compound, C19H22INO, contains two independent molecules. Classical intramolecular O—HN hydrogen bonds stabilize the molecular structures. The crystal structure is stabilized by weak intermolecular C—Hπ and π–π [centroid–centroid = 3.8622 (18) Å] interactions. In both molecules, the aromatic rings are nearly perpendicular to each other [dihedral angles = 84.26 (17) and 86.69 (15)°].
organic compounds
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In the title adduct, 2C6H5NO3·C3H6N6·H2O, the melamine and the two independent nitrophenol molecules are essentially planar, with maximum deviations of 0.0294 (10), 0.0706 (12) and 0.0742 (12) Å, respectively. In the crystal, N—HN, O—HN, N—HO and O—HO hydrogen bonds link the components into a three-dimensional network. In addition, weak π–π interactions [centroid–centroid distances = 3.728 (3) and 3.749 (3) Å] are observed.
organic compounds
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In the cation of the title salt, C6H7N2O2+·C7H7O3S−, the benzene ring makes a dihedral angle of 10.2 (2)° with the nitro group. In the crystal, the cations and anions are linked by weak N—HO hydrogen bonds, forming a layer parallel to the ac plane. A weak C—HO interaction and π–π interactions [centroid–centroid distances of 3.738 (3) and 3.748 (3) Å] also observed within the layer.
organic compounds
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In the title molecular salt, C6H6NO2+.C4H3O4−, the 2-carboxypyridinium cation is essentially planar with a maximum deviation of 0.003 (3) Å. In the crystal, adjacent cations and anions are linked by an extensive system of weak N—HO, O—HO and C—HO interactions, forming a layer parallel to the ab plane.
organic compounds
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In the title salt, C15H16N+·C7H7O3S−, the dihedral angle between the pyridine and benzene rings of the cation is 5.98 (18)°. In the crystal, adjacent anions and cations are linked by weak non-classical C—HO hydrogen bonds and π–π interactions, with a centroid–centroid distance of 3.749 (2) Å.