Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 2 (February 2013)


organic compounds



bt6884 scheme

Acta Cryst. (2013). E69, o301    [ doi:10.1107/S1600536813002195 ]

The charge-transfer complex 1-aminoanthraquinone-7,7',8,8'-tetracyanoquinodimethane (1/1)

A. B. de Oliveira, J. Beck, J. Daniels, J. N. Santos and B. R. S. Feitosa

Abstract: The reaction of 1-aminoanthraquinone with 7,7',8,8'-tetracyanoquinodimethane yielded the title charge-transfer complex, C14H9NO2·C12H4N4. The molecules have maximum deviations from the mean planes through the non-H atoms of 0.0769 (14) Å for an oxo O atom and 0.1175 (17) Å for a cyano N atom, respectively. The dihedral angle between the two planes is 3.55 (3)°. In the crystal, molecules are stacked into columns along the a-axis direction. Pairs of N-H...N and N-H...O interactions connect the molecules perpendicular to the stacking direction. Additionally, an intramolecular N-H...O hydrogen-bond interaction is observed for 1-aminoanthraquinone.


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