Spectral characterization and crystal structure of 2-amino-N′-[(1Z)-1-(4-chlorophenyl)ethylidene]-benzohydrazide

The crystal structure of 2-amino-N′-[(1Z)-1-(4-chlorophenyl)ethylidene]benzohydrazide (I) is determined by X-ray diffraction at room temperature. The structure of I also was characterized by elemental analysis, mass, FT-IR and NMR spectroscopic techniques. The compound crystallizes in triclinic system, and space group is P1¯. Unit-cell dimensions are the following: a = 7.05380(10) Å, b = 7.65490(10) Å, c = 13.7094(4) Å, V = 694.01(2) Å3, Z = 2. The title compound is nearly planar and has intermolecular N–H⋯O hydrogen bonding. According to the spectral data, I exhibits an amide-iminol tautomerism.