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. 2010 Jul 17;66(Pt 8):o2050.
doi: 10.1107/S1600536810027522.

4-Amino-2,8-dimethyl-6H-pyrimido[1,2-a][1,3,5]triazin-6-one

Nikhil Sachdeva, Anton V Dolzhenko, Geok Kheng Tan, Lip Lin Koh, Wai Keung Chui

4-Amino-2,8-dimethyl-6H-pyrimido[1,2-a][1,3,5]triazin-6-one

Nikhil Sachdeva et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound, C(8)H(9)N(5)O, the mean planes through the pyrimidine and triazine rings form a dihedral angle of 2.83 (16)°. The amino group adopts a trigonal-planar configuration and forms an intra-molecular resonance-assisted N-H⋯O=C hydrogen bond with the carbonyl group. In the crystal, mol-ecules are linked via inter-molecular N-H⋯N hydrogen bonds into chains of C(2) (2)(6)[R(2) (2)(6)] motif. The molecules form two types of sheet parallel to (201) and (01), respectively.

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Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound showing the atomic numbering scheme. Displacement ellipsoids are drawn at the 50% probability level.
Fig. 2.
Fig. 2.
Crystal packing of the title compound, viewed down the c axis.
See this image and copyright information in PMC

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