3-(4-Chloro­phen­yl)-2-methyl­acrylic acid

In the crystal structure of the title compound, C(10)H(9)ClO(2), dimers form as a result of inter­molecular O—H⋯O bonding. These dimers are linked to each other via C—H⋯O bonds, where the CH group belongs to the benzene ring and the O atom is from the carbonyl group of an adjacent mol­ecule. There exist two inter­molecular C—H⋯O hydrogen bonds, which individually form five-membered rings. There also exists a π–π inter­action between the aromatic ring and its symmetry counterpart, with a centroid–centroid distance of 4.0202 (17) Å, and a C—H⋯π inter­action between a methyl CH group and the aromatic ring.