Acta Cryst. (2003). E59, o232-o233  [ doi:10.1107/S1600536803001612 ]

Reinvestigation of 5,12-dihydro-5,12-dimethylquino[2,3-b]acridine-7,4-dione

J. Mizuguchi and T. Senju

Abstract: The structure of the title compound, C₂₂H₁₆N₂O₂ commonly called trans-N,N'-dimethylquinacridone, has been reinvestigated at 223  K [the original determination was by Zavodnik, Chetkina & Val'kova (1981). Zh. Struckt. Khim. 22, 188-190; and also by Ohmasa & Susse (1976). Naturwissenschaften, 63, 387-388]. The structure, in space group P2₁/c, is basically in good agreement with those reported earlier, but is determined with higher precision. The entirely planar centrosymmetric molecules are arranged with major overlap of the acridine skeleton along the stacking axis.

Online 31 January 2003

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