4-Amino-3,5-diethyl-4H-1,2,4-triazole at 100 K: chains of edge-fused R(4)(4)(10) and R(4)(4)(20) rings.

The title compound, C(6)H(12)N(4), has four crystallographically independent molecules in the asymmetric unit. Intermolecular N-H...N hydrogen bonds involving amino groups and triazole N atoms form a three-dimensional framework involving R(4)(4)(10) and R(4)(4)(20) rings. The hydrogen bonding is supported by weak C-H...pi interactions.