Bis(hydrazinium) N,N'‐Dinitroethylenediaminate(2 –)

The title compound, 2N 2 H 5 + .C 2 H 2 N 4 O 2- 4 , is an inherently insensitive high-energy material. The anion has C i symmetry and is almost planar. The nitrate groups are asymmetric, with a mean nitrate N-O distance longer than that found in N,N'-dinitroethylenediamine and an N1-N2 distance close to a double-bond value.