The stereochemistries of the title compounds, both C(16)H(24)Cl(2)O, have been established by X-ray diffraction. In both structures, the seven-membered ring adopts the same conformation, whereas the six-membered ring shows an envelope conformation in the epoxydodecane structure and a boat conformation in the dodecan-9-one structure.

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Key indicatorsSingle-crystal X-ray study T = 298 K Mean '(C±C) = 0.005 A Ê R factor = 0.037 wR factor = 0.090 Data-to-parameter ratio = 8.2For details of how these key indicators were automatically derived from the article, see