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In the structure of the title compound, C
10H
6O
4, there is a single intramolecular hydrogen bond. In addition, there are a number of significant intermolecular C-H
O attractive interactions. These interactions account in part for the rather high density for an ordinary carboxylic acid, 1.522 Mg m
−3.
Supporting information
| Crystallographic Information File (CIF) Contains datablocks global, coumarin-3-carboxylic_acid |
| Structure factor file (CIF format) Supplementary material |
CCDC reference: 128289
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