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. 2012 Jun 1;68(Pt 6):o1806.
doi: 10.1107/S1600536812021769. Epub 2012 May 19.

2-Methyl-sulfonyl-1,2,4-triazolo[1,5-a]quinazolin-5(4H)-one

Rashad Al-Salahi, Mohamed Marzouk, Mohammed Abbas, Seik Weng Ng

2-Methyl-sulfonyl-1,2,4-triazolo[1,5-a]quinazolin-5(4H)-one

Rashad Al-Salahi et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The triazoloquinazoline fused-ring system of the title compound, C(10)H(8)N(4)O(3)S, is essentially planar (r.m.s. deviation = 0.027 Å). In the crystal, adjacent mol-ecules are linked by N-H⋯O(sulfon-yl) hydrogen bonds, generating a helical chain running along the b axis.

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Figures

Fig. 1.
Fig. 1.
Anisotropic displacement ellipsoid plot (Barbour, 2001) of C10H8N4O3S at the 70% probability level; hydrogen atoms are drawn as spheres of arbitrary radius.
Fig. 2.
Fig. 2.
Hydrogen-bonded chain motif.
See this image and copyright information in PMC

References

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    1. Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. - PubMed