Ethane-1,2-diaminium dipicrate dihydrate

Abstract

The title compound, C2H10N22+·2C6H2N3O7-·2H2O, crystallizes with a complete picrate anion and half an ethyl-enediammonium dication on a mirror plane, and two half-water molecules (both on a mirror plane) in the asymmetric unit. The N atoms from separate half ethylenediammonium dications are in near proximity to a phenolate O atom and two o-NO2 groups from the picrate anion, which, along with the water molecule form N - H⋯O, O - H⋯O and weak intermolecular C - H⋯O hydrogen bonds that create cyclic patterns with graph-set descriptors R24(8), R44(12), and R 44(16). The crystal packing is strongly influenced by these intermolecular interactions between symmetry-related water molecules, the half ethyl-enediammonium dication and the picrate anion, forming a three-dimensional supermolecular structure.