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 |
IR Spectrum
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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Owner | SRD/NIST Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | EPA-IR VAPOR PHASE LIBRARY |
State | gas |
References
Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, 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, IR Spectrum, 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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