Nuclear Magnetic Resonance Relaxation in Associated Liquids

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Abstract
NMR spin—lattice and spin—spin relaxation times have been measured in the associated liquids 1,3‐butanediol, 2‐methyl‐2,4‐pentanediol, glycerol, and 1,2,6‐hexanetriol at resonant frequencies of 10 and 20 Mc/sec and over the temperature range —40° to +40°C using ``spin echo'' techniques. These data were translated into average correlation times using the Kubo—Tomita model of the NMR relaxation process. By using a log Gaussian type of distribution it was possible in all four liquids to reconcile the average correlation times derived from both relaxation times and at both resonant frequencies. The rigid lattice limiting value of T2 and the variation of the distribution width with temperature were also determined.

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