## A~~act~ompa~~n of "C NMR spectra in solid pitches taken under conditions of: cross polarization with strong proton decoupling, but no sample rotation (CP), and cross polarization with strong proton decoupling and magic angle sample spinning (CP/MAS) indicate that there is a considerable loss of
Determination of Enantiomeric Excess of Leucine by13C CP-MAS Solid-State NMR
β Scribed by E. J. Tadeusiak; W. Ciesielski; S. Olejniczak
- Book ID
- 106220509
- Publisher
- Springer Vienna
- Year
- 2008
- Tongue
- English
- Weight
- 278 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0937-9347
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π SIMILAR VOLUMES
Oxazolidine derivatives of p-amino alcohols such as ephedrine have been resolved by -C NMR spedroscopy using Eu(hfc), as a chiral shift reagent. The method is quantitative in the determination of enantiomeric excess, and is advantageous where 'H NMR is of limited use owing, for example, to signitica
Solid-state 13C CP/MAS NMR spectra are reported for di β erent EDTA-metal complexes. The e β ect of metal binding on the isotropic 13C chemical shift and principal elements of the carboxyl 13C chemical shift anisotropy (CSA) tensor are discussed.
## Abstract Scleroglucan is a branched poiysaccharide, soluble in water. Solidβstate and solution ^13^C NMR were used to follow the fixation of water molecules on anhydrous scleroglucan and the evolution of the scleroglucanβwater complex from the solid state to the gel and solution state. Determina