Acta Cryst. (2008). E64, o1928  [ doi:10.1107/S1600536808028900 ]

2-(2-Chloropyrimidin-4-yl)-3,5,6,7,8,9-hexahydro-2H-1,2,4-triazolo[4,3-a]azepin-3-one

G.-C. Li, L.-Y. Wang, Z.-Y. Li and F.-L. Yang

Abstract: In the title compound, C₁₁H₁₂ClN₅O, the triazolone and pyrimidine rings are almost coplanar [dihedral angle = 2.98 (14)°]. The total puckering amplitude Q_T of the seven-membered lactam ring is 0.706 (3) Å.

Online 13 September 2008

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