Proton relaxation times in7LiCl and6LiCl solutions
- 1 January 1967
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 13 (4) , 323-330
- https://doi.org/10.1080/00268976700101161
Abstract
Measurements of the proton spin-lattice relaxation times have been made as a function of concentration and temperature in aqueous solutions of 7LiCl and 6LiCl. The difference in the relaxation times for two isotopic solutions of the same concentration and temperature is small, corresponding to a difference n reciprocal relaxation times of 0·004 sec-1. c at 25°c, where c is the molarity of the solutions. This value decreases with increasing temperature. It is shown that the difference in relaxation times arises solely from the magnetic dipole interaction between the 7Li ion nucleus and water protons. The concept of a long-lived, rigid hydrated complex around the Li ion is shown to be inconsistent with the results.Keywords
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