Dielectric and Raman spectroscopy of the heptaiodide complex (β-Cyclodextrin)2⋅CsI7⋅13H2O

The frequency and temperature dependence of the real and imaginary parts of the dielectric constant (ɛ′,ɛ″)(ɛ′,ɛ″), the phase shift (ϕ)(ϕ) and the ac-conductivity (σ)(σ) of the polycrystalline (β-Cyclodextrin)2⋅CsI7⋅13H2O (β  -Cs) have been investigated over the frequency and temperature ranges of 0–100 kHz and 140–425 K, respectively, in combination with Raman spectroscopy and DSC. The ɛ′(T)ɛ′(T), ɛ″(T)ɛ″(T) and ϕ(T)ϕ(T) variations at frequency 300 Hz in the range 140 K

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