title: (4-tert-Butyl-phenyl)-acetic acid.
abstract: In the title compound, C(12)H(16)O(2), the plane of the carboxylic acid group is almost perpendicular to the benzene ring [dihedral angle 80.9 (3)°] and the tert-butyl unit is disordered over two sets of sites in a 0.503 (6):0.497 (6) ratio. In the crystal structure, centrosymmetric dimers arise from pairs of O-H⋯O hydrogen bonds involving the carboxylic acid groups.
authors.forename: Bing-Xin
authors.initials: BX
authors.lastname: Liu
authors.forename: Yan-Ping
authors.initials: YP
authors.lastname: Yu
authors.forename: Duan-Jun
authors.initials: DJ
authors.lastname: Xu