Two Substituted [1,2,4]Triazole Derivatives

The structures of two 1,2,4-triazole derivatives, namely 5-(4-chlorophenyl)amino-8,9,10,11-tetrahydro[1]benzothieno[3,2-e] [1,2,4]triazolo[1,5-c]pyrimidine, C₁₇H₁₄ClN₅S, and its 2-methyl derivative, C₁₈H₁₆ClN₅S, have been determined. The cyclohexene ring in each compound shows disorder. Both molecules are nearly planar, with the chlorophenyl rings lying almost in the same plane as the rest of the structure. Both crystals are stabilized by N-H...N hydrogen bonds.

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