Acta Cryst. (2009). E65, o1184-o1185  [ doi:10.1107/S1600536809015542 ]

N'-[(E)-4-Bromobenzylidene]-2-(4-isobutylphenyl)propanohydrazide

H.-K. Fun, C. K. Quah, K. V. Sujith and B. Kalluraya

Abstract: The asymmetric unit of the title compound, C₂₀H₂₃BrN₂O, contains two independent molecules (A and B), in which the orientations of the 4-isobutylphenyl units are different. The dihedral angle between the two benzene rings is 88.45 (8)° in molecule A and 89.87 (8)° in molecule B. Molecules A and B are linked by a C-HN hydrogen bond. In the crystal, molecules are linked into chains running along the a axis by intermolcular N-HO and C-HO hydrogen bonds. The crystal structure is further stabilized by C-H interactions. The presence of pseudosymmetry in the structure suggests the higher symmetry space group Pbca. However, attempts to refine the structure in this space group resulted in a disorder model with high R (0.097) and wR (0.257) values. The crystal studied was an inversion twin with a 0.595 (4):0.405 (4) domain ratio.

Online 7 May 2009

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