Redetermination of 3-methyl­benzoic acid

The asymmetric unit of the title compound, C(8)H(8)O(2), contains two crystallographically independent mol­ecules, which form dimers linked by O⋯H—O hydrogen bonds. The benzene rings in the dimers are inclined at a dihedral angle of 7.30 (8)° and both methyl groups display rotational disorder. This redetermination results in a crystal structure with significantly higher precision than the original determination [Ellas & García-Blanco (1963 ▶). Acta Cryst. 16, 434], in which the authors reported only the unit-cell parameters and space group, without any detailed information on the atomic arrangement. In the crystal, dimers are connected by weak C—H⋯O inter­actions, forming R (2) (2)(10) and R (4) (4)(18) rings along [110] and an infinite zigzag chain of dimers along the [001] direction also occurs.