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The polycrystalline γ-cyclodextrin hydrate (γ-CD·12.2H 2 O) has been investigated via dielectric spectroscopy over a frequency range of 0–100kHz and the temperature ranges of 108.0–298.5K (cooling) and 109.0–433.0K (heating). At T<250.0K, the electrical properties of the sample accept a great contribution from the flip-flop proton orientational disorder and a much lesser one from the positional...