Assignment and Measurement of Deuterium Quadrupolar Couplings in Liquid Crystals by Deuterium−Carbon NMR Correlation Spectroscopy
✍ Scribed by Auger, Céline; Lesage, Anne; Caldarelli, Stefano; Hodgkinson, Paul; Emsley, Lyndon
- Book ID
- 127267855
- Publisher
- American Chemical Society
- Year
- 1998
- Tongue
- English
- Weight
- 88 KB
- Volume
- 102
- Category
- Article
- ISSN
- 0022-3654
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## Abstract The two‐dimensional QUADSHIFT experiment is introduced, which permits the separation of chemical shifts and quadrupolar couplings in solid‐state magic angle spinning NMR spectra of powder samples. The technique was applied to partially deuteriated norcamphor and camphor under slow magic
The two-dimensional deuterium auto-correlation spectrum of 4,4'-d1lmethoxyazoxybenzene has been used to assgn the peaks in the normal deuterium spectrum, in both cases wth the sample in the liquid crystal phase It IS shown that the assignment recently proposed by Hayamizu and Yamamoto is correct.