4′-Hydroxy­biphenyl-4-carboxylic acid

The title compound, C(13)H(10)O(3), has potential oxygen donor and acceptor sites. Inter­molecular hydrogen bonding between neighboring carboxyl­ate groups leads to the formation of hydrogen-bonded dimers [graph-set motif R (2) (2)(8)]. A second hydrogen-bonding inter­action between the hydr­oxy groups generates a chain and extends the structure into a lamellar layer. One of the benzene rings is disordered over two positions with an occupancy ratio of 0.57 (2):0.43 (2).