1,3-Propane­di­ammonium bis(3′-nitro-trans-cinnamate) and trans-1,2-cyclo­hexane­di­ammonium bis(3′-nitro-trans-cinnamate)

In the title two adducts, C₃H₁₂N₂²⁺·2C₉H₆NO₄⁻, (I), and C₆H₁₆N₂²⁺·2C₉H₆NO₄⁻, (II), hydrogen bonds between the di­ammonium and carboxyl­ate ions form a two-dimensional network parallel to the ab plane in (I) and one-dimensional chains along the c axis in (II). The cyclo­hexane­di­ammonium ion in (II) has a crystallographic twofold axis.