The crystal structure of 2-amino-N'-[(1Z)-1-(4-chlorophenyl)ethylideneJbenzohydrazide (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 P (1) over bar. Unit-cell dimensions are the following: a = 7.05380(10) angstrom, b = 7.65490(10) angstrom, c = 13.7094(4) angstrom, V = 694.01(2) angstrom(3), Z = 2. The title compound is nearly planar and has intermolecular N H center dot center dot center dot O hydrogen bonding. According to the spectral data, I exhibits an amide-iminol tautomerism. (C) 2012 King Saud University. Production and hosting by Elsevier B.V. All rights reserved.