Abstract
Measurements of magnetic susceptibility, electron and nuclear spin resonance line shifts and relaxation rates, and dynamic nuclear polarizations (Overhauser effect) in dilute metal-ammonia solutions are reviewed. Analysis of the data available enables calculations to be made of the density of solvent molecules in the solvation shell of solvated electrons, and the correlation time per solvent molecule for the decay of electron-nuclear hyperfine interactions. The correlation time is compared with those for molecular processes in pure liquid ammonia, and for electron transport in dilute metal-ammonia solutions, in an attempt to determine the stoichiometry of the solvated electron, e-(NH3)n. The solvent density in the vicinity of the localized electrons (0.18 å-3) is significantly lower than that of the first shell of nearest neighbours in pure liquid ammonia (0.31 å−3) obtained from the radial distribution function (x-ray diffraction).
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