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Depolarized Rayleigh scattering spectra for liquid glycerol (21 < T < 65°C) and 1,3‐butanediol (21 < T < 169 C) have been obtained for states along the coexistence curve. Even at higher temperatures the corresponding time correlation functions are not exponentials for intermediate and longer times. They have been interpreted in terms of an assymmetric Cole‐Davidson distribution of relaxation times as is customary in dielectric and acoustic relaxation studies. At higher temperatures the value of the average relaxation time approaches the structural relaxation time and the width of the distribution of relaxation times tends to increase. This indicates the existence of fast dynamical modes affecting the polarizability tensor. It is suggested that these modes reflect the formation and breaking of hydrogen bonds.
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Posch et al. (1977) studied this question.
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