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The chemical shift—III: The NMR spectra of some diterpenes

✍ Scribed by J.W. ApSimon; W.G. Craig; P.V. Demarco; D.W. Mathieson; W.B. Whalley

Publisher
Elsevier Science
Year
1967
Tongue
French
Weight
704 KB
Volume
23
Category
Article
ISSN
0040-4020

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Pseudocontact effects between a paramagnetic metal ion and its ligands have proven helpful in the past in interpreting the nmr spectrum, in particular the proton n.m.r. spectrum, of the ligands.' Unusually large chemical shifts spread out a spectrum, simplify it, and often make it amenable to first