title: 2-Acetylbenzoic acid: phthalide form.
abstract: In the structure of the phthalide form of 2-acetylbenzoic acid, C9H8O3, there is a single type of hydrogen bond. Each molecule donates one and accepts one hydrogen bond. The hydrogen-bonded molecules form sets of puckered ribbons running along the c direction which are not crosslinked to each other. The dihedral angle between the planes of adjacent molecules along a hydrogen-bonded ribbon is 77.4(1) degrees.
authors.affiliation: Department of Chemistry, Ohio State University, Columbus 43210, USA.
authors.forename: A J
authors.initials: AJ
authors.lastname: Dobson
authors.forename: R E
authors.initials: RE
authors.lastname: Gerkin
mesh_terms: D001572:Benzofurans / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D015394:Molecular Structure
chemical_list: C104226:3-hydroxy-3-methyl-1(3H)-isobenzofuranone; D001572:Benzofurans; C082022:phthalide