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organic compounds
The title acid, C19H16O2, crystallized in space group P. In this structure, a hydrogen bond of the `cyclic dimer ' type is formed about a center of symmetry. The OdonorOacceptor distance is 2.647 (1) Å. The carboxylic H and O atoms are ordered. The dihedral angle between the best-fit naphthalene plane and the carboxylic group plane is 11.1 (2) °.