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- W4254129601 abstract "In this paper we describe a nuclear magnetic resonance study of the relative motion of the repulsive ion pairs PF−6/⋅ON(SO3)−22 and F−/⋅ON(SO3)−22 in dilute D2O solutions. From measurements at 188.217 MHz of the spin-lattice relaxation time of the 19F nuclei on PF−6 and F−, we have obtained the experimental interparticle dipolar relaxation rate of these nuclei due to their interaction with the electronic spins of the paramagnetic anion ⋅ON(SO3)−22. The underlying reduced spectral density j̄2(ωFτ), which depends on the relative motion of the interacting ions, is simply proportional to the interparticle relaxation rate. The experimental spectral densities are compared with theoretical calculations for different model electrolytes over a range of ionic strengths. It is found that the agreement between theory and experiment is generally good for both molecular and continuum solvent models which take the electrostatic ionic repulsion into account. The PF−6/⋅ON(SO3)−22 results are in somewhat better agreement with the molecular solvent picture and provide some evidence for a solvent induced minimum in the short-range behavior of the ion–ion potential of mean force." @default.
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- W4254129601 date "1985-07-01" @default.
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- W4254129601 title "The relative motion of ions in solution. III. An NMR relaxation study of repulsive ions in water at low ionic strength" @default.
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- W4254129601 doi "https://doi.org/10.1063/1.449824" @default.
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