## Abstract The NMR spectrum of benzaldehyde oriented in the nematic phase of a mixture of __p__β(__p__βethoxyphenylazo)phenylheptanoate and __p__β(__p__βethoxyphenylazo)phenylundecylenate is analysed. It is demonstrated that the data are inconsistent with models in which the aldehyde group freely
NMR analysis of benzotrifluoride partially oriented in a nematic phase
β Scribed by J. Degelaen; P. Diehl; W. Niederberger
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- English
- Weight
- 178 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
β¦ Synopsis
The NMR spectrum of benzotrifluoride dissolved in the nematic phase of n-(p-ethoxybenzylidene )-p'-n-butylaniline has been analysed, and the structure of the proton and fluorine skeleton has been determined. The height of the hindering potential to trifluoromethyl rotation cannot be measured. Due to the low accuracy of the determined F-F distance, no precise information about the anisotropy of the indirect coupling can be given.
π SIMILAR VOLUMES
## Abstract The NMR spectrum of __cis__β2βbutene partially oriented in a nematic phase has been analysed, and information about the geometry and the indirect spinβspin coupling constants has been obtained. Assuming the barrier of rotation of the methyl groups and other geometrical information from
Multiple-quantum proton NMR spectra of the 8-spin system of indene partially oriented in a nematic mesophase were acquired using a magnetic field gradient (MFG) method. Six-, seven-and eight-quantum spectra were solved to yield all intramolecular dipolar couplings (D i j ) which were used to determi
## Abstract The proton NMR spectrum of the 8βspin system of indene has been studied in the nematic phase of __N__β(__p__βethoxybenzylidene)β__p__β__n__βbutylaniline. Orientation parameters and ratios of interproton distances have been derived and are compared with the results of an electron diffrac