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Upper left: K0−1 versus n in Na+(PEG)n polymers. Upper right: cross section for Na+(PEG)17 versus temperature. Lower left: lowest energy structures of Na+(PEG)9 and (Gly)4H+. In both structures white represents hydrogen, gray oxygen or nitrogen, black carbon. Lower right: cross section versus temperature for Na+(PEG)17, Na+(PEG)13 and Na+(PEG)9. Open circles experiment and lines theory (see text). Figure adapted from Refs. [28] and [64].
