๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Spin-lattice relaxation of 15N nuclei in organic compounds

โœ Scribed by E. Lippmaa; T. Saluvere; S. Laisaar

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
412 KB
Volume
11
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

โœฆ Synopsis

The spin-lattice relaxation of lSN nuclei in organic compounds is caused by the dipole-dipole interaction with protons at lower temperatures and by the spin-rotation interaction at higher temperatures. The relaxation times are very long k most compounds.

1. lnboduction

Even though the 15N NMR spectra can yield useful information

๐Ÿ“œ SIMILAR VOLUMES

Spin-lattice relaxation of 15N nuclei
Spin-lattice relaxation of 15N nuclei
โœ T. Saluvere; E. Lippmaa ๐Ÿ“‚ Article ๐Ÿ“… 1970 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 316 KB

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

Spinโ€”lattice relaxation of 13C nuclei in
Spinโ€”lattice relaxation of 13C nuclei in organic liquids
โœ A. Olivson; E. Lippmaa ๐Ÿ“‚ Article ๐Ÿ“… 1971 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 479 KB

## 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

Natural abundance nitrogen-15 n.m.r. spe
Natural abundance nitrogen-15 n.m.r. spectroscopy. Spinโ€“lattice relaxation in organic compounds
โœ George C. Levy; Clive E. Holloway; Richard C. Rosanske; James M. Hewitt; Craig H ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 554 KB

## Abstract The small negative magnetogyric ratio (ฮณ) of the ^15^N nucleus decreases the efficiency of ^15^N๏ฃฟ^1^H dipoleโ€dipole relaxation to about 25% of that for an analogous ^13^C nucleus. This may lead to greater competition from other relaxation mechanisms in ^15^N n.m.r. and consequent partia