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vol.58 número3PRELIMINARY ANTIPROLIFERATIVE EVALUATION OF NATURAL,-SYNTHETIC BENZALDEHYDES AND BENZYL ALCOHOLSSTRUCTURAL AND THERMAL STUDY OF A NEW COORDINATION POLYMER POLY-BIS (μ2-BUTANE-1,2-DIYL BIS (PYRIDINE-3-CARBOXYLATE) K²N,N-SILVER(I) TETRAFLUOROBORATE índice de autoresíndice de assuntospesquisa de artigos
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Journal of the Chilean Chemical Society

versão On-line ISSN 0717-9707

Resumo

KESTERNICH, VÍCTOR et al. SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION AND X-RAY ANALYSIS OF 6-NITROQUINAZOLINE-2,4(1H,3H)-DIONE. J. Chil. Chem. Soc. [online]. 2013, vol.58, n.3, pp.1817-1819. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072013000300004.

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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