organic compounds
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The molecular structure of the title salt, C6H16N+·C20H11N6O12S−, shows a planar geometry of the benzamido–phenyl–sulfonyl moiety, with a dihedral angle of 1.59 (9)° between the aromatic ring planes. The central ring and the aromatic ring of the other dinitrobenzamide group are nearly perpendicular, making a dihedral angle of 89.55 (9)°. All nitro groups lie almost in plane with the associated aromatic rings, the O—N—C—C torsion angles ranging from 9.2 (2) to 24.3 (2)°. In the crystal, strong anion–anion N—HO and anion–cation hydrogen bonds form inversion dimers stacked along the a axis. Less prominent anion–anion C—HO interactions lead to the formation of a three-dimensional network including anion–anion dimers as well as anion–anion chains along [100?].
organic compounds
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The molecule of the title compound, C19H13Br2N3O2, lies about a twofold rotation axis. The benzene ring makes dihedral angles of 8.9 (2) and 16.4 (2)° with the central pyridine ring and the second benzene ring, respectively. An intramolecular N—HN contact occurs. In the crystal, molecules are connected by pairs of N—HO hydrogen bonds into chains along the c axis.
organic compounds
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The molecular structure of the title compound, C13H10N2O4, shows an almost planar conformation as the benzene rings make a dihedral angle of 2.31 (7)°. The nitro group lies in plane with the benzamide ring, with a C—C—N—O torsion angle of 0.6 (2)°. In the crystal, N—HO and O—HO hydrogen bonds link molecules into sheets stacked along [10-1].
organic compounds
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The molecular structure of the pyridine derivative, C19H15N3O4·C3H7NO, shows almost planar geometry with dihedral angles of 6.9 (1) and 13.4 (1)° between the pyridine ring and the two benzene rings. This conformation is stabilized by two intramolecular N—HN(pyridine) bonds. In the crystal, strong O—HO(carboxamide) and N—HO(hydroxyphenyl) hydrogen bonds link the molecules, forming a three-dimensional structure. The dimethylformamide solvent molecules are not involved in the hydrogen bonding. The structure shows pseudosymmetry, but refinement in the space group Pbcn leads to significantly worse results and a disordered dimethylformamide molecule.