- Formula: C20H18
- Molecular weight: 258.3569
- IUPAC Standard InChI:
- Download the identifier in a file.
- IUPAC Standard InChIKey: QIDUHGHFWAMMPV-UHFFFAOYSA-N
- CAS Registry Number: 5271-39-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Ethane, 1,1,1-triphenyl-; 1,1,1-Triphenylethane
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes
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
|cH°solid||-10599.8 ± 2.0||kJ/mol||Cm||Coops, Mulder, et al., 1953||Reanalyzed by Cox and Pilcher, 1970, Original value = -10599. ± 2. kJ/mol; See Coops, Mulder, et al., 1946; Corresponding «DELTA»fHºsolid = 157.1 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|
|316.7||298.5||Smith and Andrews, 1931||T = 102 to 346 K. Value is unsmoothed experimental datum.; DH|
Phase change data
Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), References, Notes
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
|Tfus||367. ± 1.||K||AVG||N/A||Average of 6 values; Individual data points|
|subH°||108.6 ± 0.9||kJ/mol||GS||Verevkin, 1999||Based on data from 338. - 363. K.; AC|
Enthalpy of sublimation
|subH (kJ/mol)||Temperature (K)||Method||Reference||Comment|
|105.4 ± 0.9||351.||GS||Verevkin, 1999||Based on data from 338. - 363. K.; AC|
Enthalpy of fusion
|fusH (kJ/mol)||Temperature (K)||Method||Reference||Comment|
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change data, References, Notes
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
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|Owner||NIST Mass Spectrometry Data Center|
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
|NIST MS number||12528|
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Notes
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]
Verevkin, Sergey P., Thermochemical Properties of Triphenylalkanes and Tetraphenylmethane. Strain in Phenyl Substituted Alkanes, J. Chem. Eng. Data, 1999, 44, 3, 557-562, https://doi.org/10.1021/je9802726 . [all data]
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Tfus Fusion (melting) point cH°solid Enthalpy of combustion of solid at standard conditions fusH Enthalpy of fusion subH Enthalpy of sublimation subH° Enthalpy of sublimation at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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