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Pentacyclo[5.4.0.0(2,6).0(3,10).0(5,9)]undecane-8,11-dione

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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

Quantity Value Units Method Reference Comment
Ttriple516.8KN/AWeinstein, Leffler, et al., 1984Crystal phase 1 phase; Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Deltasub92.6 ± 1.0kJ/molMEJiménez, Roux, et al., 1999AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
5.23516.8DSCJiménez, Roux, et al., 1999AC
3.94516.8DSCWeinstein, Leffler, et al., 1984, 2There is a large difference in the experimental enthalpies and transition temperature reported by the two research groups for the solid/solid transition around 355 K; AC

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.

Weinstein, Leffler, et al., 1984
Weinstein, D.I.; Leffler, A.J.; Currie, J.A., Phase Transitions in Bicyclic Compounds, Mol. Cryst. Liq. Cryst., 1984, 104, 95. [all data]

Jiménez, Roux, et al., 1999
Jiménez, P.; Roux, M.V.; Dávalos, J.Z.; Abboud, J.-L.M.; Molina, M.T., Structural effects on the thermochemical properties of cycloalkanones. III. Enthalpy of combustion, vapour pressures, and enthalpy of sublimation, and standard enthalpy of formation in the gaseous phase of pentacyclo[5.4.0.02,6.03,10.05,9]undecane-8,11-dione, The Journal of Chemical Thermodynamics, 1999, 31, 2, 263-271, https://doi.org/10.1006/jcht.1998.0450 . [all data]

Weinstein, Leffler, et al., 1984, 2
Weinstein, D.I.; Leffler, A.J.; Currie, J.A., Phase Transitions In Bicyclic Compounds, Molecular Crystals and Liquid Crystals, 1984, 104, 1-2, 95-109, https://doi.org/10.1080/00268948408070401 . [all data]


Notes

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