## Spin-lattice relaxation times of t3C nuclei in organic compounds have been measured in a wide temperature range. The dipole-dipole interaction with protons is predominant at lower temperatures and the spin-rotation interaction at higher temperatures. Both the measured relaxation times and r3C c
Spin-lattice relaxation of13C nuclei in monosubstituted cyclohexanes
β Scribed by V. G. Berezhnoi; N. M. Sergeev
- Book ID
- 104928798
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 1976
- Tongue
- English
- Weight
- 262 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0022-4766
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The spin-lnttice rclaxltion of I% nuclei in inorganic ions is governed by inter-nnd intramoleculnl dipole-dipole and shift anisotropy intcrnctions at lowzr tcmpcrntures and by the spin-rotation interaction at higher temperatures. The mensured relnxttion rntes lcsd to rcasonablc rnlues for the 15~ s
The spin-lattice relaxation of ten polychloroalkanes (ethanes to pentanes) have been studied both neat and in a 50% solution in CDC13. The Tl values for the CH,, CH,Cl and CHCl, carbons decrease with increasing molecular weight in accordance with a dipolar-dominated mechanism, whereas those of the C
Monosubstituted cyclohexanes were synthesized by addition of a cyclohexyl radical to olefins bearing different substituents at the a-position. Six distinct methylene "C resonances were observed, indicating that the methylene carbons located at the 2 and 6 positions and at the 3 and 5 positions are n