Acta Cryst. (2006). E62, o1841-o1843  [ doi:10.1107/S1600536806012566 ]

Pterodontic acid

Z.-N. Mei, Y.-F. Li, X. Yu and G.-Z. Yang

Abstract: In the title compound, C₁₅H₂₂O₂, the C=C bond lengths in the cyclohexene ring and the allylic acid group [1.325 (3) and 1.324 (3) Å] are almost equal and are shorter than those observed in ethylene. The C=O and C-O bond lengths in the allylic acid group [1.201 (3) and 1.321 (3) Å] are almost equal to those of formic acid. There is an intramolecular hydrogen bond between the allylic acid H atom and the hydroxy O atom [CO = 2.673 (2) Å and C-HO = 101°].

Online 13 April 2006

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