title: Crystal structure of (E)-hex-2-enoic acid.
abstract: The crystal structure of the title compound, C6H10O2, an α,β-unsaturated carb-oxy-lic acid, displays carb-oxy-lic acid inversion dimers linked by pairs of O-H⋯O hydrogen bonds. The packing is characterized by layers of acid dimers. All the non-H atoms of the (E)-hex-2-enoic acid mol-ecule lie almost in the same plane (r.m.s. deviation for the non-H atoms = 0.018 Å).
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.
authors.forename: Tim
authors.initials: T
authors.lastname: Peppel
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.
authors.forename: Marcel
authors.initials: M
authors.lastname: Sonneck
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.
authors.forename: Anke
authors.initials: A
authors.lastname: Spannenberg
authors.affiliation: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Wohlrab
keywords: crystal structure; dimer; hydrogen bond; unsaturated carb­oxy­lic acid