A Study of Solvation-Shell Symmetry in Electrolyte Solutions Using Quadrupolar NMR Relaxation of the Nuclei of Monoatomic Ions
The spin-lattice relaxation rates of 7Li, 23Na, 27Al, 71Ga, and 139La nuclei in electrolyte solutions have been investigated as functions of the isotopic composition of the solvent. The results show that quadrupolar relaxation of the nuclei of monoatomic ions is extremely sensitive to the symmetry of the solvation shells. The data are compared to the results for the 2H and 17O nuclei of the solvent molecules and the 14N nucleus of the nitrate anion. A semiquantitative description of the observed effects is given.
Chizhik
VI
St. Petersburg State University, St. Petersburg, 198904, Russia
Podkorytov
IS
Kaikkonen
AP
Mikhailov
VI