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Cover Picture (Angew. Chem. Int. Ed. Engl. 2/1987)
Publication year - 1987
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198700931
Subject(s) - cover (algebra) , ring (chemistry) , crystallography , physics , chemistry , stereochemistry , engineering , organic chemistry , mechanical engineering
The cover sows an extremely unusual cyclohexane derivative. In this [6.5]coronane, each pair of neighboring C atoms of the six‐membered ring are joined by a (CH 2 ) 3 bridge, resulting in the formation of six‐additional rings. The 13 C‐NMR spectrum of the compound is only in agreement with a rapidly inverting species having an all‐ cis conformation. Low‐temperature spectra, as well as force field calculations, on an analogue containing only five additional rings, indicate that the central ring exists in a flattened chairconformation. Further details are reported by L. Fitjer et. al. on p. 130 ff.