Acta Cryst. (2011). E67, o485  [ doi:10.1107/S1600536811002601 ]

Methyl 3,5,5,6,8,8-hexamethyl-5,6,7,8-tetrahydronaphthalene-2-carboxylate (AHTN-COOMe)

P. Kuhlich, F. Emmerling, C. Piechotta and I. Nehls

Abstract: Crystals of the title compound, C₁₈H₂₆O₂, were grown from ethyl acetate. Due to the racemic precursor, the title compound is also obtained as a racemate. Disorder was observed during structure refinement, originating from two possible half-chair conformations of the non-aromatic ring. The disorder was refined by introducing split positions in the cyclo-hexane ring regarding the two possible R and S-enantiomers at the chiral CH group [ratio 0.744 (3):0.256 (3)]. The crystal structure features pairs of inversion-related molecules connected by pairs of non-classical C-HO hydrogen bonds.

Online 26 January 2011

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