3-tert-Butyl-1-(3-nitrophenyl)-1H-pyrazol-5-amine

In the title compound, C13H16N4O2, the pyrazole ring forms a dihedral angle of 50.61 (6)degrees with the 3-nitro-phenyl ring. The plane of the nitro group is twisted by 6.8 (7)degrees out of the plane of the phenyl ring. In the crystal, the molecules are linked by N-H center dot center dot center dot N and N-H center dot center dot center dot O hydrogen bonds, forming sheets in the bc plane. In addition, a weak C-H center dot center dot center dot N interaction is observed.