Received 17 November 2009
The title compound, C24H16Br2N2O2·2C4H9NO, crystallizes in an anti C=O orientation. The two amide groups are twisted away from the naphthalene ring system by 62.67 (8) and 75.93 (7)°. The crystal packing is stabilized by N-HO and C-HO hydrogen bonds. Each of the dimethylacetamide solvent molecules is disordered over two positions, with occupancy ratios of 0.556 (7):0.444 (7) and 0.654 (7):0.346 (7).
For the use of 1,4-naphthalenedicarboxylic acid derivatives in the preparation of polymers, see: Fukuzumi et al. (1994); Tsukada et al. (1994). For the crystal structure of the 4-methylphenyl analog, see: Jing (2008).
Data collection: RAPID-AUTO (Rigaku, 2004); cell refinement: RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CI2967 ).
The author thanks the Centre for Testing and Analysis, Cheng Du Branch, Chinese Academy of Sciences, for analytical support.
Fukuzumi, T., Tajiri, T., Tsukada, H. & Yoshida, J. (1994). Jpn Patent JP 06298919.
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.
Jing, L.-H. (2008). Acta Cryst. E64, o2379.
Rigaku (2004). RAPID-AUTO. Rigaku/MSC Inc., The Woodlands, Texas, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Tsukada, H., Tajiri, T., Fukuzumi, T. & Yoshida, J. (1994). Jpn Patent JP 06298918.