Published Date
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].
For further details log on website :
http://www.ncbi.nlm.nih.gov/pubmed/21588035
Acta Crystallogr Sect E Struct Rep Online. 2010 Jun 26;66(Pt 7):o1830-1. doi: 10.1107/S1600536810024463.
Title
2,3-Dimethyl-6-nitro-quinoxaline.
Author
Ghalib RM, Hashim R, Mehdi SH, Goh JH, Fun HK.
Abstract
- PMID:
- 21588035
- PMCID:
- PMC3006956
- DOI:
- 10.1107/S1600536810024463
| PMC full text: |
Published online 2010 Jun 26. doi: 10.1107/S1600536810024463
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Fig. 1.
The molecular structure of (I) showing 30 % probability displacement ellipsoids for non-H atoms.
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| PMC full text: |
Published online 2010 Jun 26. doi: 10.1107/S1600536810024463
|
Fig. 2.
Fit of molecule A (dashed lines) on molecule B (solid lines). H atoms have been omitted for clarity.
| PMC full text: |
Published online 2010 Jun 26. doi: 10.1107/S1600536810024463
|
<< PrevFig. 3.Next >>
|
Fig. 3.
The crystal structure of (I), viewed along the a axis, showing the molecules being linked into one-dimensional chains along the [001] direction. Intermolecular hydrogen bonds are shown as dashed lines.
For further details log on website :
http://www.ncbi.nlm.nih.gov/pubmed/21588035
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