✍ Scribed by U. Vestin; J. Kowalewski; U. Henriksson
No coin nor oath required. For personal study only.
Carbon‐13 spin–lattice relaxation times and nuclear Overhauser enhancement factors are reported for triethylaluminium in toluene‐d~8~ solution in the temperature interval 208–318 K. Aluminium‐27 linewidths are reported for the same solution in the temperature range 212–334 K. The effective correlation times at different positions in the molecule are determined and used for qualitative discussion of internal motions.
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0, I3C and 29Si nuclear magnetic relaxation data are reported for neat liquid octamethylcyclotetrasiloxane in the temperature range 298-373 K. The electric field gradient at the site of the oxygen nucleus is estimated by ab initio calculations and the "0 relaxation data are interpreted in terms of i
## Abstract Carbon‐13 spin‐lattice relaxation times (__T__~1~) and ^13^C‐{^19^F} nuclear Overhauser enhancement (NOE) factors have been measured for some simple fluorocarbons by pulse‐Fourier transform methods—‘progressive saturation’ and ‘dynamic Overhauser enhancement’. The NOE factors are shown
## Abstract Carbon‐13 chemical shifts, spin‐lattice relaxation times and nuclear Overhauser enhancement factors are reported for five polyfluoroaromatic compounds at 28°C. In all cases the relaxation of the fluorine bearing carbon is predominantly dipolar. Effective correlation times are smaller th
Multiple-field carbon-13 NMR relaxation studies were performed on four disaccharides with different sugar residues, anomeric configurations and substitution positions. Measurements were made in dimethyl sulfoxide at 300 K, leading to conditions outside the extreme narrowing regime. Global correlatio