Sd. Brown et al., 3 POLYMORPHIC FORMS OF 2-ETHYL-3-HYDROXY-4-PYRANONE (ETHYL MALTOL), Acta crystallographica. Section C, Crystal structure communications, 51, 1995, pp. 1335-1338
The crystal structures of three polymorphic forms of ethyl maltol (2-e
thyl-3-hydroxy-4-pyranone), C7H8O3, have been determined. The polymorp
hs exhibit different molecular arrangements through intermolecular hyd
rogen bonding. Form (1) contains nearly planar chains of molecules, (2
) contains three-dimensional or spiral chains and (3) contains hydroge
n-bonded dimers.