4,4'-di-tert-Butylbiphenyl
- Formula: C20H26
- Molecular weight: 266.4204
- IUPAC Standard InChIKey: CDKCEZNPAYWORX-UHFFFAOYSA-N
- CAS Registry Number: 1625-91-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 4,4'-di-t-Butylbiphenyl; 1,1'-Biphenyl, 4,4'-bis(1,1-dimethylethyl)-; 4,4'-di-tert-butyl-1,1'-biphenyl
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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
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 392. | K | N/A | Romadane and Berga, 1958 | Uncertainty assigned by TRC = 6. K; TRC |
Tfus | 390. | K | N/A | Knauf and Adams, 1933 | Uncertainty assigned by TRC = 4. K; TRC |
Tfus | 402. | K | N/A | Chichibabin, Elgazin, et al., 1928 | Uncertainty assigned by TRC = 3. K; TRC |
Tfus | 395. | K | N/A | Schreiner, 1910 | Uncertainty assigned by TRC = 4. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 86.2 ± 3.2 | kJ/mol | S-V | Nti-Gyabaah, Chan, et al., 2009 | AC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 106.8 ± 3.2 | kJ/mol | C | Melkhanova, Pimenova, et al., 2009 | AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
20.0 | 400.8 | DSC | Melkhanova, Pimenova, et al., 2009 | AC |
18.8 | 402. | DSC | Näther, Jeß, et al., 2002 | AC |
Reaction 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
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
= C20H26
By formula: C20H26 = C20H26
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 0.4 ± 2.2 | kJ/mol | Eqk | Roshchupkina, Nesterova, et al., 1987 | liquid phase; T=358.7 K |
References
Go To: Top, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Romadane and Berga, 1958
Romadane, I.A.; Berga, S.E.,
Alkylation of Biphenyl with Alcohols in the Presence of Boron Trifluoride- phosphoric Acid Catalyst,
Zh. Obshch. Khim., 1958, 28, 413-7. [all data]
Knauf and Adams, 1933
Knauf; Adams, J.S.,
J. Am. Chem. Soc., 1933, 55, 4704. [all data]
Chichibabin, Elgazin, et al., 1928
Chichibabin, A.E.; Elgazin; Lengold,
Zh. Russ. Fiz.-Khim. O-va., Chast Khim., 1928, 60, 347. [all data]
Schreiner, 1910
Schreiner, E.,
J. Prakt. Chem., 1910, 81, 422. [all data]
Nti-Gyabaah, Chan, et al., 2009
Nti-Gyabaah, J.; Chan, V.; Chiew, Y.C.,
Solubility and limiting activity coefficient of simvastatin in different organic solvents,
Fluid Phase Equilibria, 2009, 280, 1-2, 35-41, https://doi.org/10.1016/j.fluid.2009.03.006
. [all data]
Melkhanova, Pimenova, et al., 2009
Melkhanova, Svetlana V.; Pimenova, Svetlana M.; Chelovskaya, Nelly V.; Miroshnichenko, Eugenii A.; Pashchenko, Larisa L.; Nesterov, Igor A.; Naumkin, P.V.,
Thermochemical studies of 4-tert-butylbiphenyl and 4,4´-di-tert-butylbiphenyl,
The Journal of Chemical Thermodynamics, 2009, 41, 5, 651-653, https://doi.org/10.1016/j.jct.2008.12.015
. [all data]
Näther, Jeß, et al., 2002
Näther, Christian; Jeß, Inke; Havlas, Zdenek; Bolte, Michael; Nagel, Norbert; Nick, Sabine,
Trimorphism of 4,4´-Di(tert.-butyl)-biphenyl: structural, thermodynamic and kinetic aspects,
Solid State Sciences, 2002, 4, 6, 859-871, https://doi.org/10.1016/S1293-2558(02)01324-9
. [all data]
Roshchupkina, Nesterova, et al., 1987
Roshchupkina, I.Yu.; Nesterova, T.N.; Rozhnov, A.M.,
Equilibria of isomeric transformations of alkylbiphenyls,
J. Chem. Thermodyn., 1987, 19, 299-306. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔrH° Enthalpy of reaction at standard conditions ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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