An investigation of factors governing conformational disorder of hydrocarbon chains in the solid state
β Scribed by M.J.M. Van Oort; G. Neshvad; M.A. White
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 614 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0022-4596
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Double-quantum heteronuclear local field NMR is performed on a sample of a 13C2-labeled disaccharide, in which the two 13C spins are located on opposite sides of the glycosidic linkage. The evolution of the double-quantum coherences is found to be consistent with the solid-state conformation of the
## Abstract The energy barriers associated with Nο£ΎO rotation in a series of __p__βnitrosoanilines were measured by the total bandshape NMR method. Energies [Ξ__G__^β‘^ (298.15 K)] are in the range 38β57 kJ mol^β1^, the magnitudes being lowered appreciably by the presence of methyl substituents flank