## Abstract One‐bond ^37^Cl/^35^Cl isotope effects on ^13^C NMR chemical shifts were used to assign the ^1^H and ^13^C NMR spectra of bis(4‐chlorophenyl)sulfone, 4,5‐dichlorophthalic acid and 2,2^′^‐thiobis(4,6‐dichlorophenol). The chlorine‐bonded carbons showed characteristic peaks separated by ab
35Cl NQR spectra and 13C NMR spectra of polycyclic chlorinated hydrocarbons with 10 and 12 carbon atoms
✍ Scribed by Hans Georg Fitzky; Siegmar Gäb
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 560 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The structure of cyclic chlorinated hydrocarbons can be elucidated by the use of combined ^13^C nuclear magnetic resonance and ^35^Cl nuclear quadrupole resonance. The advantages obtained and the techniques employed with respect to some new and already investigated compounds, and typical shift values aiding studies of similar derivatives, are reported.
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A new 13C N M R method based on solvent effects allows the identification of carbon atoms a to a carbonyl group. With a simple change in solvent from CDCl, to CDC1,-dioxane (1:4), the -C absorption for all carbons except those a to the carbonyl group in the compounds under study were displaced to lo
## Abstract The positions of conformational equilibria in the four diastereoisomers of 8,9,11,11a,11b,12,13‐octahydro‐7a__H__‐quino [1,2‐__c__] [1,3] benzoxazines were investigated using ^13^C and ^1^H NMR spectroscopy. Comparison of the NMR chemical shifts of these isomers with those in the corres