The use of carbon-13 spin lattice relaxation times for determining the position of the proton in an intramolecular hydrogen bond
β Scribed by Jackman, L. M.; Trewella, J. C.
- Book ID
- 126879461
- Publisher
- American Chemical Society
- Year
- 1976
- Tongue
- English
- Weight
- 350 KB
- Volume
- 98
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Nuclear magnetic resonance of 13C is used to probe the overall and internal motions of proline. Spin-lattice relaxation times (TI) are reported for proline monomer dissolved in water/glycerol mixtures. Rates of overall molecular motion and internal motion depend on solvent composition but to differe
Relaxation calculations for rapidly spinning samples show that spin-lattice relaxation time (T 1Z ) anisotropy varies with the angle between the rotor spinning axis and the external field. When the rate of molecular motion is in the extreme narrowing limit, the measurement of T 1Z anisotropies for t
## Abstract A pulse sequence is presented which allows measurement of short __T__~1~ values (< 1 s) in solids, avoiding probe damage by the use of saturating sequences of 90Β° pulses. The use of the sequence is illustrated for a crossβlinked polymeric system which contains composite peaks having bot