Research Article: 2-[(E)-4-Diethyl­amino-2-hy­droxy­benzyl­idene]hydrazinecarboxamide

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Hoong-Kun Fun, Chin Wei Ooi, Shridhar Malladi, Arun M. Isloor, Kammasandra N. Shivananda.


Two mol­ecules make up the asymmetric unit of the title compound, C12H18N4O2, and both feature an intra­molecular O—H⋯N hydrogen bond, which generates an S(6) ring. The diethyl­amino group of one of the mol­ecules is disordered over two sets of sites in a 0.59 (2):0.41 (2) ratio. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into sheets lying parallel to the ac plane and C—H⋯π inter­actions are also observed.

Partial Text

For a related structure and background references to semicarbazides and semicarbazones, see: Fun et al. (2011 ▶). For hydrogen-bond motifs, see: Bernstein et al. (1995 ▶). For reference bond-length data, see: Allen et al. (1987 ▶).