title: 1,4-Diazo-niabicyclo-[2.2.2]octane bis-(2,4,6-trinitro-phenolate).
abstract: In the title compound, C(6)H(14)N(2) (2+)·2C(6)H(2)N(3)O(7) (-), the cation possesses crystallographically imposed twofold rotation symmetry. In the crystal structure, the cation and anions are linked into a trimeric aggregate by inter-molecular N-H⋯O hydrogen bonds. The trimeric units are further connected by π-π inter-actions [centroid-centroid distances = 3.507 (2)-3.660 (3) Å], forming layers parallel to the bc plane.
authors.affiliation: Ordered Matter Science Research Center, Southeast University, Nanjing 210096, People's Republic of China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Sima