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. 2012 May 1;68(Pt 5):o1512-3.
doi: 10.1107/S1600536812017412. Epub 2012 Apr 25.

(Z)-7-[2-(4-Bromo-phen-yl)hydrazin-1-yl-idene]-6-methyl-3-(pyridin-4-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazine

Hoong-Kun Fun, Suchada Chantrapromma, Mashooq A Bhat, Hatem A Abdel-Aziz

(Z)-7-[2-(4-Bromo-phen-yl)hydrazin-1-yl-idene]-6-methyl-3-(pyridin-4-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazine

Hoong-Kun Fun et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the asymmetric unit of the title compound, C(16)H(12)BrN(7)S, there are two crystallographically independent mol-ecules with similar conformations. Both mol-ecules are slightly twisted; the central 1,2,4-triazolo[3,4-b]-1,3,4-thia-diazine ring system makes dihedral angles of 9.65 (15) and 13.29 (15)° with the pyridine and benzene rings, respectively, in one mol-ecule, whereas the corresponding values in the other mol-ecule are 9.30 (15) and 4.84 (15)°. A weak intra-molecular C-H⋯N inter-action with an S(6) ring motif is observed in each mol-ecule. In the crystal, the independent mol-ecules are each linked through N-H⋯N hydrogen bonds and weak C-H⋯N interactions into ribbons along the c axis. The ribbons are further linked together by weak C-H⋯N, C-H⋯π and π-π [centroid-centroid distances = 3.572 (2)-3.884 (2) Å] inter-actions.

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Figures

Fig. 1.
Fig. 1.
The asymmetric unit of the title compound, showing 40% probability displacement ellipsoids and the atom-numbering scheme. Hydrogen bonds are drawn as dash lines.
Fig. 2.
Fig. 2.
A crystal packing diagram of the title compound viewed along the a axis. Hydrogen bonds are shown as dashed lines.
See this image and copyright information in PMC

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