Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 1 (January 2013)

organic compounds

Acta Cryst. (2013). E69, o8    [ doi:10.1107/S1600536812048878 ]


S. M. Saad, I. Khan, S. Perveen, K. M. Khan and S. Yousuf

Abstract: In the title mol­ecule, C16H14N4O4, the quinazoline ring is substanti­ally planar (r.m.s. deviation = 0.0129 Å) and forms a dihedral angle of 2.73 (8)° with the benzene ring. The conformation of the mol­ecule is stabilized by an intra­molecular C-H...N hydrogen bond. In the crystal, mol­ecules are linked into chains running parallel to the b axis by C-H...O hydrogen bonds. In addition, [pi]-[pi] stacking is observed between dimethoxy-substituted and nitro-substituted benzene rings, with centroid-centroid distances in the range 3.6438 (10)-3.7148 (10) Å.

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