Abstract
The molecule of the title compound, C11H11N3O5, exists as the E isomer as it is stabilized by an intramolecular hydrogen bond. Except for the methyl H atoms, all atoms lie in special positions on a mirror plane and form a large conjugated system; the methyl H atoms are disordered about the mirror plane. In the crystalline state, bifurcated intra- and intermolecular N—H⋯O hydrogen bonds and four intermolecular C—H⋯O hydrogen bonds link the molecules into large perfectly planar sheets. Along the c axis, the N—N bond center approaches the phenyl-ring centroids of its neighbouring molecules above and below to give π–π overlap (at a distance of ca 3.57 Å), thus fusing the molecules into a three-dimensional framework.
Highlights
The molecule of the title compound, C11H11N3O5, exists as the E isomer as it is stabilized by an intramolecular hydrogen bond
Except for the methyl H atoms, all atoms lie in special positions on a mirror plane and form a large conjugated system; the methyl H atoms are disordered about the mirror plane
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) x, y+1, z; (iii) −x+1, y+1/2, −z+1/2
Summary
The molecule of the title compound, C11H11N3O5, exists as the E isomer as it is stabilized by an intramolecular hydrogen bond. Except for the methyl H atoms, all atoms lie in special positions on a mirror plane and form a large conjugated system; the methyl H atoms are disordered about the mirror plane. In the crystalline state, bifurcated intra- and intermolecular N—HÁ Á ÁO hydrogen bonds and four intermolecular C—HÁ Á ÁO hydrogen bonds link the molecules into large perfectly planar sheets. The N—N bond center approaches the phenyl-ring centroids of its neighbouring molecules above and below to give – overlap (at a distance of ca 3.57 A ), fusing the molecules into a threedimensional framework.
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