Acta Cryst. (2005). E61, o2887-o2890  [ doi:10.1107/S1600536805023652 ]

3-(Dimethylammonio)propanaminium dipicrate

C. Muthamizhchelvan, K. Saminathan, K. SethuSankar, J. Fraanje, R. Peschar and K. Sivakumar

Abstract: In the title complex, C₅H₁₆N₂²⁺·2C₆H₂N₃O₇^-, the two picrate anions lie almost parallel to each other and have possible - interactions between them. One of the anions is involved in limited N-HO bonds, whereas the other engages in extensive N-HO and C-HO hydrogen bonds. Tilting of one of the ortho nitro groups in the picrate anion is influenced by the N-HO hydrogen bond. The dimethylaminopropylammonium and picrate ions are linked through N-HO and C-HO hydrogen bonds, forming chains along the crystallographic b axis. The anions form near-helical columns along the b axis owing to the presence of a 2₁ screw and are separated by nearly linear cationic chains.

Online 12 August 2005

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