organic compounds
Open access
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 Rwp 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.
organic compounds
Open access
The crystal structure of hydrochlorothiazide form II, C7H8ClN3O4S2, was solved by simulated annealing from laboratory X-ray powder diffraction data collected at room temperature to 1.76 Å resolution. Subsequent Rietveld refinement yielded an Rwp of 0.0376 to 1.49 Å resolution. The molecules crystallize in the space group P21/c with one molecule in the asymmetric unit. The structure is stabilized by three N—HN and one N—HO hydrogen-bonded intermolecular interaction.