title: 5-Hydr-oxy-2-methyl-4H-pyran-4-one.
abstract: The title compound, C(6)H(6)O(3), is a member of the pyrone family. The mol-ecules are planar (r.m.s. deviation of the asymmetric unit is 0.0248 Å, whereas that of the dimer is 0.0360 Å) and they are dimerized due to inter-molecular O-H⋯O hydrogen bonds. The dimers are connected to each other through hydrogen bonds involving the CH(3) group and the hydr-oxy O atom. There are π-π inter-actions between the centroids of the pyrone rings at a distance of 3.8552 (13) Å. A C-H⋯π inter-action also exists between the carbonyl group and the centroid CgA of the pyrone ring, with O⋯CgA = 3.65 (1) Å and C⋯CgA = 4.363 (2) Å.
authors.forename: Muhammad Ashraf
authors.initials: MA
authors.lastname: Shaheen
authors.forename: Christian G
authors.initials: CG
authors.lastname: Hartinger
authors.forename: M Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.forename: Ahmad Awan
authors.initials: AA
authors.lastname: Shafiq
authors.forename: Bernhard K
authors.initials: BK
authors.lastname: Keppler