1,1,4,4,10,10,13,13-Octamethyl-cyclooctadecane

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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, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus438.KN/ABorgen and Dale, 1972Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC
Tfus438.KN/ABorgen and Dale, 1969Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
20.167438.Borgen and Dale, 1969, 2DH
20.17438.2Borgen, Dale, et al., 1972See also Borgen and Dale, 1969, 3.; AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
46.4438.Borgen and Dale, 1969, 2DH

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
6.736427.crystaline, IIcrystaline, IBorgen and Dale, 1969, 2DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
15.9427.crystaline, IIcrystaline, IBorgen and Dale, 1969, 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.

Borgen and Dale, 1972
Borgen, G.; Dale, J., Fourfold gem-Dimethyl Substituted Macrocyclic Paraffins., Acta Chem. Scand., 1972, 26, 1149, https://doi.org/10.3891/acta.chem.scand.26-1149 . [all data]

Borgen and Dale, 1969
Borgen, G.; Dale, J., gem-Dimethyl substituted cyclooctadecanes, conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative, J. Chem. Soc., 1969, 1969, 447-8. [all data]

Borgen and Dale, 1969, 2
Borgen, G.; Dale, J., gem-Dimethyl substituted cyclooctadecanes, conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative, J. Chem. Soc., 1969, D, Chem. [all data]

Borgen, Dale, et al., 1972
Borgen, Gerd; Dale, Johannes; Munch-Petersen, Jon; Näslund, Maria; Svensson, Sigfrid, Fourfold gem-Dimethyl Substituted Macrocyclic Paraffins., Acta Chem. Scand., 1972, 26, 1149-1154, https://doi.org/10.3891/acta.chem.scand.26-1149 . [all data]

Borgen and Dale, 1969, 3
Borgen, Gerd; Dale, Johannes, gem-Dimethyl substituted cyclo-octadecanes; conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative, J. Chem. Soc. D, 1969, 9, 447, https://doi.org/10.1039/c29690000447 . [all data]


Notes

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