(2E)-2-(2-Phenyl-hydrazin-1-yl-idene)propanoic acid

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 67; no. Pt 5; p. o1163
• Main Authors: Affan, Md Abu, Salam, M A, Siew, Eleazar Veronica, Ng, Seik Weng, Tiekink, Edward R T
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 01-05-2011
• Subjects: Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536811013717

The 13 non-H atoms comprising the title compound, C(9)H(10)N(2)O(2), are close to planar (r.m.s. deviation = 0.140 Å), with maximum deviations of 0.292 (1) and 0.210 (1) Å to either side of the least-squares plane exhibited by the hy-droxy and carbonyl O atoms, respectively. The observed conformation is stabilized by an intra-molecular O-H⋯N hydrogen bond. The conformation about the N=C double bond [1.2909 (16) Å] is E. The hy-droxy OH group also forms an inter-molecular hydrogen bond to a carbonyl O atom, and the amine H atom similarly forms an N-H⋯O hydrogen bond to a second carbonyl O atom. The result is the formation of a double layer with a flat topology. Layers stack along the a-axis direction connected by C-H⋯π inter-actions.