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2,9-Di-chloro-5,12-di-hydro-quino-2,3-b-acridine-7,14-dione (red phase)

, , , and . Acta Cryst. E, 61 (8): o2596--o2598 (August 2005)
DOI: 10.1107/s1600536805022257

Abstract

The title compound, C20H10Cl2N2O2, is one of the quinacridone derivatives known as a red pigment. The molecule has inversion symmetry. The quinacridone molecules are connected by bifurcated N-H...O hydrogen bonds along 110 to form a two-dimensional hydrogen-bond network.

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