title: 3-(4-Chloro-phen-yl)-2-methyl-acrylic acid.
abstract: In the crystal structure of the title compound, C(10)H(9)ClO(2), dimers form as a result of inter-molecular 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 mol-ecule. There exist two inter-molecular C-H⋯O hydrogen bonds, which individually form five-membered rings. There also exists a π-π inter-action between the aromatic ring and its symmetry counterpart, with a centroid-centroid distance of 4.0202 (17) Å, and a C-H⋯π inter-action between a methyl CH group and the aromatic ring.
authors.forename: Niaz
authors.initials: N
authors.lastname: Muhammad
authors.forename: Muhammad Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.lastname: Zia-Ur-Rehman
authors.forename: Saqib
authors.initials: S
authors.lastname: Ali
authors.forename: Farkhanda
authors.initials: F
authors.lastname: Shaheen