The title compound, C18H16O2, crystallized in the centrosymmetric spac
e group P2(1)/a. The single type of carboxylic hydrogen bond forms cyc
lic dimers about centers of symmetry. The carboxylic H atom is ordered
as are the carboxylic O atoms. This structure comprises double layers
of aromatic rings in a herring-bone array separated by double layers
of hydrogen-bonded aliphatic strings and is a very close analog of the
structures of 4-(2-naphthyl)butanoic acid and other terminally aryl-s
ubstituted n-aliphatic carboxylic acids.