Amicarbazone

Abstract

Three independent mol-ecules comprise the asymmetric unit of the title compound, C10H19N5O2, (systematic name: 4-amino-N-tert-butyl-3-isopropyl-5-oxo-4,5-dihydro-1H-1,2,4-triazole-1-carboxamide) . In all three mol-ecules, the triazole ring and the carboxamide group are almost coplanar [within 4.0-5.9 (9)°], particularly because of the formation of an intra-molecular N-H⋯O hydrogen bond. On other hand, the orientation of the isopropyl group varies significantly from mol-ecule to mol-ecule. The crystal packing is dominated by N-H⋯O and N-H⋯N hydrogen bonds, which connect the mol-ecules into infinite chains along [010].

Fig. 1.

Molecular structure of the three independent molecules in the title compound showing the atom labeling scheme and 30% probability displacement ellipsoids.

Fig. 2.

Packing diagram of the title compound viewed along the c axis. Dashed lines indicate N—H···O intramolecular hydrogen bonds and weak N—H···O, N—H···N intermolecular interactions which form a network of infininte 1-D chains along [010]. H atoms not involved in hydrogen bonds or weak intermolecular interactions have been removed for clarity.