Benzene, 1,1',1'',1'''-(1,2-ethanediylidene)tetrakis-

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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfgas357. ± 5.4kJ/molCcbBeckhaus, Dogan, et al., 1990 

Condensed phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfsolid220. ± 3.kJ/molCcbBeckhaus, Dogan, et al., 1990ALS
Quantity Value Units Method Reference Comment
Δcsolid-13596. ± 3.kJ/molCcbBeckhaus, Dogan, et al., 1990Corresponding Δfsolid = 220. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcsolid-13591.4 ± 1.3kJ/molCcbCoops, Mulder, et al., 1953Reanalyzed by Cox and Pilcher, 1970, Original value = -13595. ± 3. kJ/mol; See Coops, Mulder, et al., 1946; Corresponding Δfsolid = 216.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
399.6298.5Smith and Andrews, 1931T = 102 to 346 K. Value is unsmoothed experimental datum.; DH

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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus485. ± 4.KAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Δsub137.kJ/molVBeckhaus, Dogan, et al., 1990ALS
Δsub137.0kJ/molN/ABeckhaus, Dogan, et al., 1990DRB
Δsub136.8 ± 2.9kJ/molGSBeckhaus, Dogan, et al., 1990AC

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
131.4 ± 2.1396.GSBeckhaus, Dogan, et al., 1990Based on data from 370. to 423. 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

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes

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

Beckhaus, Dogan, et al., 1990
Beckhaus, H.D.; Dogan, B.; Schaetzer, J.; Hellmann, S.; Ruchardt, C., Thermische stabilitat und bildungsenthalpie von 1,2,2,2- und 1,1,1,2- tetraphenylethan. - Die stabilisierungsenergien von benzhydryl- und triphenylmethyl-radikalen, Chem. Ber., 1990, 123, 137-144. [all data]

Coops, Mulder, et al., 1953
Coops, J.; Mulder, D.; Dienske, J.W.; Smittenberg, J., Thermochemical investigations on arylethanes I. Heats of combustion of phenylethanes., Rec. Trav. Chim. Pays/Bas, 1953, 72, 785. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Coops, Mulder, et al., 1946
Coops, J.; Mulder, D.; Dienske, J.W.; Smittenberg, J., The heats of combustion of a number of hydrocarbons, Rec. Trav. Chim. Pays/Bas, 1946, 65, 128. [all data]

Smith and Andrews, 1931
Smith, R.H.; Andrews, D.H., Thermal energy studies. I. Phenyl derivatives of methane, ethane and some related compounds. J. Am. Chem. Soc., 1931, 53, 3644-3660. [all data]


Notes

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