7 research outputs found
N′-[(E)-2-Hydroxy-3,5-diiodobenzylidene]cyclohexane-1-carbohydrazide
In the title compound, C14H10I2N2O2, the two aromatic rings are inclined at a dihedral angle of 16.72 (33)°. The molecular structure is stabilized by an intramolecular O—H⋯N hydrogen bond. In the crystal, intermolecular N—H⋯O interactions link the molecules into chains running along the c axis. C—H⋯O interactions also occur. The crystal used for the structure determination was a non-merohedral twin with a domain ratio of 0.972 (2):0.028 (2)
N′-[(1E)-3-Bromo-5-chloro-2-hydroxybenzylidene]-4-tert-butylbenzohydrazide ethanol monosolvate
In the title compound, C18H18BrClN2O2·C2H6O, the hydroxy group forms an intramolecular O—H⋯N hydrogen bond, which influences the conformation of the Shiff base molecule, where the two aromatic rings form a dihedral angle of 21.67 (8)°. Intermolecular N—H⋯O and O—H⋯O hydrogen bonds link two Shiff base molecules and two solvent molecules into a centrosymmetric heterotetramer. Weak intermolecular C—H⋯O interactions link further tetramers related by translation along the a axis into chains
N′-[(E)-2-Hydroxy-3,5-diiodobenzylidene]pyridine-3-carbohydrazide
In the title compound, C13H9I2N3O2, the dihedral angle between the two aromatic rings is 10.5 (2)°. The molecule displays a trans configuration with respect to the C=N bond. An intramolecular O—H⋯N hydrogen bond occurs. The crystal packing is stabilized by N—H⋯O and C—H⋯O hydrogen bonds