Acta Cryst. (2013). E69, o48 [ doi:10.1107/S1600536812049690 ]
Abstract: The title compound, C20H10Cl2N2, has crystallographic twofold rotational symmetry [maximum deviation from the least-squares plane = 0.038 (1) Å]. In the crystal, weak - ring stacking interactions occur down the a-axis direction [minimum centroid-centroid separation = 3.7163 (8) Å].
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