Date Published: April 01, 2012
Publisher: International Union of Crystallography
Author(s): Hatem A. Abdel-Aziz, Hazem A. Ghabbour, Madhukar Hemamalini, Hoong-Kun Fun.
The asymmetric unit of the title compound, C18H19ClN4O2, contains two molecules, in which the dihedral angles between the benzene rings are 43.60 (12) and 58.65 (13)°. The hydrazine N atoms are twisted slightly out of the planes of the tolyl and methoxybenzene rings: the C—C—N—N and N—N—C—C torsion angles are 171.1 (2) and −174.4 (2)°, respectively, for one molecule and −177.4 (2) and −170.6 (2)°, respectively, for the other. In the crystal, molecules are linked by N—H⋯O and C—H⋯O hydrogen bonds into chains propagating along the b-axis direction.
For related structures and background to the bioactivity of hydrazones, see: Chantrapromma et al. (2011 ▶); Fun et al. (2012 ▶); Abdel-Aziz & Mekawey (2009 ▶); Abdel-Aziz et al. (2010 ▶). For reference bond lengths, see: Allen et al. (1987 ▶).