Acta Cryst. (2010). E66, o1979-o1980  [ doi:10.1107/S1600536810026565 ]

Opipramol dipicrate

J. P. Jasinski, A. E. Pek, B. P. Siddaraju, H. S. Yathirajan and B. Narayana

Abstract: In the crystal structure of the title compound, C₂₃H₃₁N₃O²⁺·2C₆H₂N₃O₇^-, {systematic name: 1-[3-(5H-dibenz[b,f]azepin-5-yl)propyl]-4-(2-hydroxyethyl)piperazine-1,4-diium bis(2,4,6-trinitrophrenolate)} the piperazine group in the opipramol dication is protonated at both N atoms. Each picrate anion interacts with the protonated N atom in the cation through a bifurcated N-HO hydrogen bond, forming an R₂¹(6) ring motif. In the cation, the dihedral angle between the mean planes of the two benzene rings is 50.81 (8) Å. Intermolecular O-HO and weak C-HO hydrogen bonds, and weak -ring and - stacking interactions dominate the crystal packing.

Online 10 July 2010

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