Acta Cryst. (2006). C62, o590-o592 [ doi:10.1107/S0108270106032732 ]
Abstract: The title compounds 2,6-dibromo-3,5-dimethylpyridine, C7H7Br2N, (I), and 2,6-diiodo-3,5-dimethylpyridine, C7H7I2N, (II), constitute the first structurally characterized examples of 2,6-dihalo-3,5-dimethylpyridines. Compound (I) crystallizes as a racemic twin with two symmetry-independent molecules in the asymmetric unit, while (II) is non-planar with the pyridine ring slightly deformed into a saddle shape, and exhibits crystallographically imposed twofold symmetry. Both (I) and (II) exhibit aromatic face-to-face ![[pi]](/logos/entities/pi_rmgif.gif)
-stacking in the solid state, although there are no other long-range interactions. In (I), alternate molecules are oriented at 90°, resulting in X-shaped columns, while in (II), molecules pack in a parallel fashion, leading to a zigzag array.
Formula: C7H7Br2N and C7H7I2N
 |   Structure factor file (CIF format) (104.8 kbytes) |
| Structure factor file (CIF format) (51.0 kbytes) |
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