The NMR spectrum of phenol, dissolved in a nematic solvent, is explainable in terms of two averaging planar structures for each of which the principle axis of orientation in the ring is on the opposite side of the oxygen atom from the hydroxyl proton. External hydrogen bonding to the solvent seems t
The NMR spectrum and total geometry of selenophene determined in the liquid crystal medium ZLI 1167
β Scribed by William Bechtold; G. Brock Magruder; J. H. Goldstein
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 299 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
Abstract
The calculated ^12^C, ^13^C and ^77^Se spectra of selenophene have been reproduced from the observed proton NMR spectrum in the orienting medium Merck ZLI 1167, and the entire ring structure computed. The effects on structure of vibration, solvent dependence of couplings and temperature have been explored. Most notable was the observation of a substantial increase in the Seο£ΏC bond length, comparable to that previously reported for selenophene in Merck Phase IV.
π SIMILAR VOLUMES
The regio-and enantiomeric excess analyses of (S)-half esters resulting from enzymatic (iipase, esterase) hydrolyses of chiral dimethyl succinates, were accurately determined from H,C COLOC experiments and 2H NMR in liquid crystal (PBLG, CH2C12). (~) 1997 Elsevier Science Ltd