Abstract:The title compounds, 6-nitroquinazolin-4(3H)-one (C8H5N3O3; I), 6-aminoquinazolin-4(3H)-one (C8H7N3O; II) and 4-aminoquinazolin-1-ium chloride–4-aminoquinazoline–water (1/1/2), (C8H8N3
+·Cl−·C8H7N3·2H2O; III) were synthesized and their structures were determined by single-crystal X-ray analysis. In the crystals of I and II, the quinazoline molecules form hydrogen-bonded dimers via N—H...O interactions. The dimers are connected by weak intermolecular C—H...N and C—H...O hydrogen bonds, forming… Show more
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