Abstract
The title compound, C15H14N2O4, has two crystallographically independent molecules in the asymmetric unit. In both molecules, the nitro and the two methoxy substituents are coplanar with the benzene rings to which they are attached. The benzene rings are nearly coplanar, with dihedral angles between the two benzene rings of 10.39 (8) and 5.95 (8)° in the two molecules. The two independent molecules in the asymmetric unit are rotated with respect to each other such that the dihedral angles between equivalent benzene rings are 49.11 (8) and 63.93 (8)°. In the crystal structure, intermolecular C—H⋯O hydrogen-bond contacts and a weak C—H⋯π interaction are observed.
Highlights
The title compound, C15H14N2O4, has two crystallographically independent molecules in the asymmetric unit
The nitro and the two methoxy substituents are coplanar with the benzene rings to which they are attached
The two independent molecules in the asymmetric unit are rotated with respect to each other such that the dihedral angles between equivalent benzene rings are 49.11 (8) and 63.93 (8)
Summary
Key indicators: single-crystal X-ray study; T = 296 K; mean (C–C) = 0.002 A; R factor = 0.045; wR factor = 0.119; data-to-parameter ratio = 16.7. The title compound, C15H14N2O4, has two crystallographically independent molecules in the asymmetric unit. In both molecules, the nitro and the two methoxy substituents are coplanar with the benzene rings to which they are attached. The two independent molecules in the asymmetric unit are rotated with respect to each other such that the dihedral angles between equivalent benzene rings are 49.11 (8) and 63.93 (8). Intermolecular C—HÁ Á ÁO hydrogen-bond contacts and a weak C—HÁ Á Á interaction are observed. See: Akkurt et al (2005, 2008)
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