50 research outputs found
4-Methoxy-N′-(4-methoxybenzylidene)benzohydrazide
The title compound, C16H16N2O3, was prepared by the reaction of 4-methoxybenzaldehyde with 4-methoxybenzohydrazide in methanol. The dihedral angle between the two benzene rings is 3.1 (3)°. In the crystal, intermolecular N—H⋯O hydrogen bonds link the molecules into C(4) chains along the b axis
N′-(2-Chlorobenzylidene)-2-fluorobenzohydrazide
The title hydrazone compound, C14H10ClFN2O, adopts an E configuration about the C=N double bond. The dihedral angle between the two substituted benzene rings is 11.6 (2)°. The F atom is disordered over two sites with occupancies of 0.488 (2) and 0.512 (2). In the crystal, molecules are linked through intermolecular N—H⋯O hydrogen bonds, forming chains along the a axis. C—H⋯F and C—H⋯O interactions also occur
N′-(2-Chlorobenzylidene)-2-methylbenzohydrazide
The title hydrazone compound, C15H13ClN2O, adopts an E configuration about the C=N double bond. The dihedral angle between the two benzene rings is 13.1 (2)°. In the crystal, molecules are linked through N—H⋯O hydrogen bonds, forming chains parallel to [101]
N′-(4-Hydroxybenzylidene)-2-methylbenzohydrazide
The title hydrazone compound, C15H14N2O2, was prepared by the condensation of 4-hydroxybenzaldehyde with 2-methylbenzohydrazide in methanol. The dihedral angle between the two benzene rings is 42.3 (2)°. In the crystal structure, molecules are linked by intermolecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds, forming a three-dimensional framework
N′-(2,4-Dichlorobenzylidene)-2-methylbenzohydrazide
In the title hydrazone compound, C15H12Cl2N2O, the dihedral angle between the two benzene rings is 12.2 (2)°. In the crystal, molecules are linked through intermolecular N—H⋯O hydrogen bonds, forming forming C(4) chains propagating in [001]
N′-(2-Hydroxy-4-methoxybenzylidene)-3-nitrobenzohydrazide
In the molecule of the title compound, C15H13N3O3, an intramolecular O—H⋯N hydrogen bond influences the planarity of the conformation; the dihedral angle between the benzene rings is 11.4 (3)°. In the crystal, molecules are linked by N—H⋯O hydrogen bonds into chains in [101]
N′-(3,5-Dibromo-2-hydroxybenzylidene)-2-methylbenzohydrazide
The asymmetric unit of the title compound, C15H12Br2N2O2, contains two independent molecules in which the dihedral angles between the benzene rings are 49.5 (7) and 66.4 (7)°. Intramolecular O—H⋯N hydrogen bonds generate S(6) ring motifs in each molecule. In the crystal, molecules are linked through intermolecular N—H⋯O hydrogen bonds, forming chains along the b axis
N′-(4-Hydroxybenzylidene)-3-methoxybenzohydrazide
In the title compound, C15H14N2O3, the dihedral angle between the two benzene rings is 47.9 (3)°. In the crystal, molecules are linked through N—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds, forming layers parallel to the ab plane
N′-(5-Bromo-2-hydroxybenzylidene)-3-nitrobenzohydrazide methanol monosolvate
In the title compound, C14H10BrN3O4·CH4O, the dihedral angle between the two benzene rings in the hydrazone molecule is 5.8 (3)° and an intramolecular O—H⋯N hydrogen bond generates an S(6) ring motif. An O—H⋯O hydrogen bond occurs between the hydrazone molecule and the methanol solvent molecule. In the crystal, the components are linked by intermolecular N—H⋯O hydrogen bonds, forming chains along the a axis
N′-(2-Hydroxy-3,5-diiodobenzylidene)-2-methylbenzohydrazide
The asymmetric unit of the title compound, C15H12I2N2O2, contains two independent molecules in which the dihedral angles between the two benzene rings are 62.4 (7) and 41.1 (7)°. Intramolecular O—H⋯N hydrogen bonds generate S(6) ring motifs in each molecule. In the crystal, molecules are linked through intermolecular N—H⋯O hydrogen bonds, forming chains along the a axis