Simplified Analysis of Mixtures of Small Molecules by Chromatographic NMR Spectroscopy
β Scribed by Guilhem Pages; Corinne Delaurent; Stefano Caldarelli
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 395 KB
- Volume
- 118
- Category
- Article
- ISSN
- 0044-8249
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π SIMILAR VOLUMES
The addition of a solid to a mixture of small molecules introduces variations on the average translational mobility of these latter, proportional to the affinity of a given moiety for the less-mobile phase. This effect is at the basis of chromatographic separation, but can be used to simplify the NM
## Abstract The suitability of ^13^C NMR as a technique for determining __o__β, __m__, and __p__βcresols in their mixtures was investigated. Spectra were determined in methanol, containing __o__βtoluidine as an internal standard, without nuclear Overhauser suppression. Ratios of peak areas of each
## Abstract A procedure is presented for determining the concentration of polymer lithium, alkyllithium, and monomer by use of smallβmolecule GPC. The system poly(styryllithium), butyllithium, styrene, and benzene are used to illustrate the method. The method as presented has a lower limit on the d
2 H NMR spectra of deuterated molecules were recorded in the lyotropic liquid crystalline phase formed by the chiral polypeptide poly--benzyl-L-glutamate (PBLG) and a co-solvent. Under such circumstances the incompletely averaged quadrupolar effects superimpose on the Zeeman terms. It is demonstrate