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Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 8 (August 2012)


organic compounds



fy2048 scheme

Acta Cryst. (2012). E68, o2501    [ doi:10.1107/S1600536812031431 ]

2-Aminoterephthalic acid N,N-dimethylformamide disolvate

S. Loos, W. Seichter, E. Weber and F. Mertens

Abstract: The asymmetric unit of the title structure, C8H7NO4·2C3H7NO, contains one 2-aminoterephthalic acid and two N,N-dimethylformamide molecules. Strong O-H...O hydrogen bonds between the acidic carboxy H atoms of 2-aminoterephthalic acid and the O atoms of both solvent molecules form linear 1:2 complex units. One H atom of the amine group is involved in intramolecular N-H...O hydrogen bonding, whereas the second one takes part in an intermolecular N-H...O connection. Furthermore, the crystal is stabilized by weak C-H...O hydrogen bonds.

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