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  • The twin-chair conformation of bicyclo[3.3.1]nonane. Differential distortions of the rings in 9-cyclohexylbicyclo[3.3.1]nonan-9-ol: an x-ray diffraction study
  • Add time:08/31/2019         Source:sciencedirect.com

    9-Cyclohexylbicyclo[3.3.1]nonan-9-ol has a twin-chair conformation with C(3)...C(7) trans-annular separation of 3.134(3) Å. In the twin chair, the ring carrying the 9-C6H11 group in the axial position is flattened to a greater extent than the ring with the 9-OH group axial. The crystals are monoclinic, space group P21/n. with a = 11.629(3), b =6.507(2), c = 17.122(3)Å, β =93.80(2)°, and Z=4. The crystal structure was determined by direct phasing and the atomic co-ordinates were subsequently adjusted by least-squares calculations which converged at R = 0.047 for 1764 diffractometer ¦Fo¦values.

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    Next: Dehydration of tertiary bicyclo[3.3.1]nonan-9-ol-2-ones. Rearrangement to cis-fused hexahydroinden-1-ones)

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