({\bf \pm})-3-Ethyl-2-methyl-4-oxo­cyclo­hexane­carboxyl­ic acid: catemeric hydrogen bonding in a cyclic δ-keto acid

Davison, M.; Kikolski, E.M.; Lalancette, R.A.; Thompson, H.W.

doi:10.1107/S0108270104010534

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 1
The asymmetric unit for (I

), with numbering shown only for the (IA) species. The apparent centrosymmetry is due to a pseudo-center at ( $[1\over 2]$ , $[1\over 2]$ , $[3\over 4]$ ). Displacement ellipsoids are shown at the 30% probability level.

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 60| Part 6| May 2004| Pages o449-o451

doi:10.1107/S0108270104010534

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