N. Benetis, J. Kowalewski, L. Nordenskiöld
Jun 15, 1984
Citations
0
Influential Citations
15
Citations
Journal
Journal of Magnetic Resonance
Abstract
Abstract Paramagnetic relaxation enhancement data are reported for 15N and 1H in aniline in the presence of bis(2,2,6,6-tetramethylheptanedionato)nickel(II). For 15N, the spin-lattice as well as spin-spin relaxation rates are reported at two magnetic fields (2.35 and 5.875 T) and over a temperature range of 244 to 356 K. For 1H we report T1 data at two fields (5.875 and 9.4 T) over a temperature range of 263 to 333 K. The experimental data are fitted to a new theoretical model, not invoking the concept of electron spin relaxation times, which is valid in the slow motion regime for the electron spin. The parameters obtained form a consistent set and have reasonable values, but the 15N results could not be fitted using the conventional model based on the modified Solomon-Bloembergen equations.