Powder diffraction study of 1,2:3,4-dibenzanthracene

The crystal structure of 1,2:3,4-dibenzanthracene, C₂₂H₁₄, was solved by simulated annealing from laboratory X-ray powder diffraction data collected at room temperature to 1.8 Å resolution. Subsequent Rietveld refinement yielded an R_wp value of 0.036. The molecules crystallize in space group P2₁ with two independent molecules in the asymmetric unit which pack in a stacked arrangement along the b axis.