Carbon-13 NMR spectra of tetracyclododecanes: Evidence for upfield δ and ε steric effects

13C NMR spectra of 36 endo–endo, exo–endo and exo–exo tetracyclic fused norbornyl compounds are interpreted. Stereochemical influences on 1H and 13C chemical shifts are compared and discussed. Only upfield δ and ε effects are observed.

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Bibliographische Detailangaben
Veröffentlicht in:	Magnetic resonance in chemistry 1993-03, Vol.31 (3), p.241-246
Hauptverfasser:	Seidl, Peter Rudolf, Leal, Kátia Zaccur, Costa, Valentim Emilio Uberti, Möllmann, Maria Elisabeti Stapoelbroek
Format:	Artikel
Sprache:	eng
Schlagworte:	13C chemical shifts Atomic and molecular physics Exact sciences and technology Molecular properties and interactions with photons Nuclear resonance and relaxation Physics Tetracyclododecane derivatives Upfield δ and ε effects
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Beschreibung
Zusammenfassung:	13C NMR spectra of 36 endo–endo, exo–endo and exo–exo tetracyclic fused norbornyl compounds are interpreted. Stereochemical influences on 1H and 13C chemical shifts are compared and discussed. Only upfield δ and ε effects are observed.
ISSN:	0749-1581 1097-458X
DOI:	10.1002/mrc.1260310306