13C nuclear magnetic resonance spectra—VI: Stereochemical dependence of γanti,heterosubstituent effects on 13C chemical shifts of bridgehead substituted molecules |
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Authors: | Helmut Duddeck Harald Klein |
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Institution: | Ruhr-Universitat Bochum, Abteilung fur Chemie Postfach 10 21 48, D-4630 Bochum 1, Germany |
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Abstract: | The 13C NMR data of some mono- and disubstituted adamantanes, homoadamantenes and homonoradamantenes are presented. A model of dependencies of the γanti substituent induced shifts on torsion angles and internuclear distances between substituents and the γ carbons is proposed. Furthermore, it is shown that for the α substituent induced shifts strain within the molecular frameworks of these compounds plays no significant part. |
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