SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION AND X-RAY ANALYSIS OF 6-NITROQUINAZOLINE-2,4(1H,3H)-DIONE
In this work, 6-nitroquinazoline-2,4(1H,3H)-dione was obtained in two step with good yields using a facile synthetic method. Its structure was characterized by X-ray single crystal diffraction technique (XRD), IR, 1D-NMR (¹H-NMR and 13C-NMR) and 2D-NMR (H-H COSY and H-C HMBC) spectroscopy. All N and...
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| Autores principales: | , , , , , , |
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| Lenguaje: | English |
| Publicado: |
Sociedad Chilena de Química
2013
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| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000300004 |
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| Sumario: | In this work, 6-nitroquinazoline-2,4(1H,3H)-dione was obtained in two step with good yields using a facile synthetic method. Its structure was characterized by X-ray single crystal diffraction technique (XRD), IR, 1D-NMR (¹H-NMR and 13C-NMR) and 2D-NMR (H-H COSY and H-C HMBC) spectroscopy. All N and O carbonyl atoms are involved in hydrogen bonding, with an average HˑˑˑO distance of 1.89(2) Å and N-HˑˑˑO angles in the range 169.5(2)-177.2(2)°. In the crystal packing the molecules are associated by two strong intermolecular N-H-O hydrogen bonds forming centrosymmetric ring with graph-set motif R²2(8), which are linked by N-HˑˑˑO hydrogen bonds. |
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