Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 11 (November 2012)


organic compounds



im2401 scheme

Acta Cryst. (2012). E68, o3066    [ doi:10.1107/S1600536812040937 ]

3-(Ammoniomethyl)pyridinium dibromide

B. F. Ali, R. Al-Far and S. F. Haddad

Abstract: In the title salt, C6H10N22+·2Br-, the non-H atoms of the 3-methylpyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052 Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz. one Npy-H...Br, two C-H...Br and three H2N-H...Br, into supramolecular layers, parallel to the bc plane, composed of alternating R24(10) and R24(8) loops. Weak [pi]-[pi] interactions between cationic rings with centroid-centroid distances of 3.891 (2) Å are also observed.


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