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

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) for an oxo O atom and 0.1175 (17) 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.