SCHEDULED MAINTENANCE
An X-ray crystallographic analysis and dynamic 1H n.m.r. study have shown that the title compound exists in a symmetrical 2,5-twist-boat conformation both in the solid state and in solution; an unusually high barrier for interconversion between the two enantiotopic conformational isomers (32.4 kJ/mol) has been measured.
S. Tomoda, M. Shimoda, M. Sanami, Y. Takeuchi and Y. Iitaka, J. Chem. Soc., Chem. Commun., 1989, 1304 DOI: 10.1039/C39890001304
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