Key indicatorsSingle-crystal X-ray study T = 150 K Mean (C-C) = 0.005 Å R factor = 0.024 wR factor = 0.053 Data-to-parameter ratio = 19.2 For details of how these key indicators were automatically derived from the article, see

No abstract

In the mol­ecule of the title compound, C15H12Br2N2, the 2,8‐dibromo analogue of Tröger's base, the two aryl rings are offset with respect to one another by virtue of the diazo­cine bridge. The dihedral angle between the two benzene rings is 94.45 (4)°.

The one‐step synthesis of a series of hybrid dibenzo Tröger's base analogues bearing at least one halogen atom is described. The strategy involves a reaction between two different anilines and affords hybrid compounds in yields as high as 46 %, together with the symmetric Tröger's base products. This straightforward approach requires only one chromatographic step and has the potential to replace multi‐step approaches to hybrid Tröger's base compounds. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

In the mol­ecule of the title compound, C19H18N2O4, the 2,8‐dimethyl ester analogue of Tröger's base, the diazo­cine bridge imparts a twist such that the two aryl rings are offset with respect to one another. The dihedral angle between the two benzene rings is 96.51 (5)°.