Molar heat capacity and thermodynamic properties of p-quaterphenyl

The molar heat capacity of p-quaterphenyl was measured by adiabatic calorimetry between 3 and 300 K. The phase transition associated with a molecular-conformation change is observed as a very broad anomaly with a maximum at (233.0±0.5) K. The molar enthalpy and entropy of transition are (414±20) J·m...

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Bibliographic Details
Published in:The Journal of chemical thermodynamics 1985, Vol.17 (6), p.539-548
Main Authors: Saito, Kazuya, Atake, Tooru, Chihara, Hideaki
Format: Article
Language:English
Subjects:
Chemical thermodynamics
Chemistry
Elements, mineral and organic compounds
Exact sciences and technology
General and physical chemistry
General. Theory
Metals and alloys
Mixtures
Thermodynamic properties
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Summary:The molar heat capacity of p-quaterphenyl was measured by adiabatic calorimetry between 3 and 300 K. The phase transition associated with a molecular-conformation change is observed as a very broad anomaly with a maximum at (233.0±0.5) K. The molar enthalpy and entropy of transition are (414±20) J·mol −1 and (1.82±0.10) J·K −1·mol −1, respectively. A comparison is made with the properties of biphenyl and p-terphenyl.
ISSN:0021-9614
1096-3626
DOI:10.1016/0021-9614(85)90053-9