Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)

organic compounds

Acta Cryst. (2013). E69, o1264-o1265    [ doi:10.1107/S1600536813018886 ]

Carbinoxaminium dipicrate

V. Ramya, J. P. Jasinski, J. P. Shannon, H. S. Yathirajan and D. K. Ravishankara

Abstract: In the dication of the title salt, C16H21ClN2O2+·2C6H2N3O7- [systematic name: 2-{(4-chloro­phen­yl)[2-(di­methyl­aza­nium­yl)eth­oxy]meth­yl}pyridinium bis­(2,4,6-tri­nitro­phenolate), contains a carbinoxaminium dication and two picrate anions, which are held together through inter­molecular N-H...O hydrogen bonds. In the dication, the two aromatic rings form a dihedral angle of 80.1 (1)°. In the two independent picrate anions, the nitro groups are twisted from the benzene plane, the largest dihedral angle in each ion being 42.8 (1) and 81.1 (5)°. In the crystal, in addition to the classical N-H...O hydrogen bonds, weak C-H...O hydrogen bonds and [pi]-[pi] inter­actions between the aromatic rings of the anions [centroid-centroid distances of 3.5768 (15) and 3.7436 (15) Å] help to establish the packing.

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