7-Methyl-1H-indole-2,3-dione

摘要

The title compound, C9H7NO2, has a single molecule in the asymmetric unit, with the non-H atoms possessing a mean deviation from planarity of 0.034 A? . In the crystal, the molecules dimerize through pairs of N—HO hydrogen bonds. The nine-membered rings of the isatins stack along the b axis, through parallel slipped – interactions [intercentroid distance = 3.8832 (4) A? , interplanar distance = 3.4038 (7) A? and slippage = 1.8690 (12) A? ].