Temperature Dependence of1H and17O NMR Shifts of Water: Entropy Effect
β Scribed by V. Balevicius; K. Aidas
- Book ID
- 106220389
- Publisher
- Springer Vienna
- Year
- 2007
- Tongue
- English
- Weight
- 503 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0937-9347
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The protonation of acetone in water for a wide range of compositions of the binary mixture was studied by multinuclear NMR spectroscopy. Formation constants (Ill and K2) and 13C, "0 and 'H chemical shifts of the 1: 1 and 1:2 complexes were evaluated. The correlation of the 'H chemical shift of uncom
## Abstract ^17^O spin relaxation times and sensitivity of detection were measured for natural abundance H~2~^17^O in the rat brain at 4.7 and 9.4 Tesla. The relaxation times were found to be magnetic field independent (__T__~2~ = 3.03 Β± 0.08 ms, __T__ = 1.79 Β± 0.04 ms, and __T__~1~ = 4.47 Β± 0.14 m