Acta Cryst. (2011). E67, o987 [ doi:10.1107/S1600536811010683 ]
Abstract: The title compound, C19H16N4, is one of the few known 3,7-diaryl-1,2,4-triazolo[4,3-c]pyrimidines. The triazolopyrimidine unit is essentially planar (r.m.s. deviation = 0.048 Å). The phenyl ring and the heterocyclic core subtend a dihedral angle of only 15.09 (6)°, whereas the m-tolyl ring is twisted by 71.80 (6)° out of the plane of the triazole ring. Two C-HN hydrogen bonds and - stacking interactions [centroid-centroid distance = 3.7045 (8) Å] stabilize the crystal packing.
Online 26 March 2011
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