title: 2-bromo-3-methyl-2-butenoic acid (2-bromosenecioic acid).
abstract: The title compound, C5H7BrO2, crystallized in space group P1. Molecules are linked to form normal centrosymmetric hydrogen-bonded dimers with O ... O 2.625(4)A. The carboxyl H and O atoms are ordered, But the H atoms of both methyl groups are disordered. The Br and C atoms lie very nearly in a plane which makes a dihedral angle of 30.0(1) degrees with the carboxyl group plane.
authors.affiliation: Department of Chemistry, Ohio State University, Columbus 43210, USA. gerkin@chemistry.ohio-state.edu
authors.forename: R E
authors.initials: RE
authors.lastname: Gerkin
mesh_terms: D003437:Crotonates / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008961:Models, Structural; D008968:Molecular Conformation
chemical_list: D003437:Crotonates; C108891:3-bromosenecioic acid