Received 11 December 2012
The title compound, C28H38Br2N2, is centrosymmetric with the mid-point of the central C-C bond of the butyl group located on an inversion center. The terminal benzene ring is approximately perpendicular to the central 1,4-diazabutadiene mean plane [dihedral angle = 78.23 (3)°]. No hydrogen bonding or aromatic stacking is observed in the crystal structure.
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: XU5664 ).
This work was supported by the National Natural Science Foundation of China (Nos. 20927004, 21175108 and 20875077), the Natural Science Foundation of Gansu Province (Nos. 0803RJZA105, 096RJZA121 and 096RJZA122) and the Key Laboratory of Polymer Materials of Gansu Province, China.
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