Abstract
The title molecule, C9H8N2O2, is essentially planar. The crystal structure is stabilized by hydrogen bonding. An intramolecular N—H⋯O hydrogen bond results in a six-membered ring. Each molecule interacts with two others through N—H⋯O and C—H⋯O hydrogen bonding, resulting in the formation of nine-membered rings. These hydrogen bonds generate a two-dimensional polymeric network. There are also π–π interactions between the aromatic and heterocyclic rings [centroid–centroid distance 3.638 (2) Å].
Highlights
The title molecule, C9H8N2O2, is essentially planar
The crystal structure is stabilized by hydrogen bonding
An intramolecular N—HÁ Á ÁO hydrogen bond results in a sixmembered ring
Summary
The crystal structure is stabilized by hydrogen bonding. An intramolecular N—HÁ Á ÁO hydrogen bond results in a sixmembered ring. Each molecule interacts with two others through N—HÁ Á ÁO and C—HÁ Á ÁO hydrogen bonding, resulting in the formation of nine-membered rings. These hydrogen bonds generate a two-dimensional polymeric network. Related literature For related literature, see: Berger et al (1999); Cignarella et al (1981); Goddard (1977); Goddard & Levitt (1979); Maliha et al (2007); Mancilla et al (2007); Momose (1980); Zuman (2004)
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