title: 2,3-Dimethyl-6-nitro-quinoxaline.
abstract: The asymmetric unit of the title quinoxaline compound, C(10)H(9)N(3)O(2), contains two crystallographically independent mol-ecules (A and B). The quinoxaline ring systems are essentially planar, with maximum deviations of 0.006 (1) and 0.017 (1) Å, respectively, for mol-ecules A and B. In mol-ecule A, the dihedral angle formed between the quinoxaline ring system and nitro group is 10.94 (3)° [6.31 (13)° for mol-ecule B]. In the crystal, mol-ecules are linked into chains propagating along [001]: one forms zigzag chains linked by C-H⋯O hydrogen bonds, whilst the other forms ladder-like chains by way of C-H⋯N and C-H⋯O hydrogen bonds. The packing is further consolidated by weak π-π inter-actions [range of centroid-centroid distances = 3.5895 (7)-3.6324 (7) Å].
authors: Raza Murad
authors: RM
authors: Ghalib
authors: Rokiah
authors: R
authors: Hashim
authors: Sayed Hasan
authors: SH
authors: Mehdi
authors: Jia Hao
authors: JH
authors: Goh
authors: Hoong-Kun
authors: HK
authors: Fun
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