The "anomalous" dynamics of decahyroisoquinoline revisited

The Journal of Chemical Physics
R Casalini, C M Roland

Abstract

Decahydroisoquinoline (DHIQ) appears to be a unique material-the only non-associated, simple liquid with dynamics deviating from density scaling. To examine whether this anomaly is real, the density, ρ, of DHIQ was measured at temperatures, T, as low as 214 K and pressures up to ∼1.2 GPa. This enabled the equation of state (EoS) to be determined, without extrapolation, over the range of thermodynamic conditions for which the relaxation times had been reported. Using this less ambiguous EoS, we find that within the precision of the available relaxation times, the latter are a function of T/ρ(3.9), contrary to previous reports. Thus, the behavior of DHIQ is unexceptional; similar to every non-associated liquid tested to date, its dynamics comply with density scaling.

References

Jul 13, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·R Casalini, C M Roland
Jul 23, 2004·The Journal of Chemical Physics·G TarjusC Alba-Simionesco
Jul 23, 2004·The Journal of Chemical Physics·K L Ngai, M Paluch
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Jul 26, 2006·The Journal of Chemical Physics·R CasaliniC M Roland
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Jan 12, 2008·The Journal of Physical Chemistry. B·D Coslovich, C M Roland
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Feb 16, 2015·The Journal of Chemical Physics·R CasaliniC M Roland

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