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4,4'-Didodecanoyloxydiphenyldiacetylene

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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tfus401.KN/AOzcayir, Asrar, et al., 1984Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
44.0401.DSCDomalski and Hearing, 1996AC

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
50.200374.crystaline, IIcrystaline, IOzcayir, Asrar, et al., 1984, 2DH
44.000401.crystaline, IliquidOzcayir, Asrar, et al., 1984, 2DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
134.1374.crystaline, IIcrystaline, IOzcayir, Asrar, et al., 1984, 2DH
109.7401.crystaline, I, Solidliquid, isotropicOzcayir, Asrar, et al., 1984, 2DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Ozcayir, Asrar, et al., 1984
Ozcayir, Y.; Asrar, J.; Blumstein, A., Diacetylenic liquid crystals: a systematic investigation of the homologous series of 4,4'-dialkanoyloxy-diphenyldiacetylenes, Mol. Cryst. Liq. Cryst., 1984, 110, 263. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Ozcayir, Asrar, et al., 1984, 2
Ozcayir, Y.; Asrar, J.; Blumstein, A., Diacetylenic liquid crystals: a systematic investigation of the homologous series of 4,4'-dialkanoyloxydiphenyldiacetylenes, Mol. Cryst. Liq. Cryst., 1984, 110, 263-276. [all data]


Notes

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