Benzoic acid, 2-(1-methylethyl)-
- Formula: C10H12O2
- Molecular weight: 164.2011
- IUPAC Standard InChIKey: BANZVKGLDQDFDV-UHFFFAOYSA-N
- CAS Registry Number: 2438-04-2
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
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 |
---|---|---|---|---|---|
ΔfH°gas | -85.85 ± 0.45 | kcal/mol | Ccb | Colomina, Jimenez, et al., 1987 |
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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -110.0 ± 0.45 | kcal/mol | Ccb | Colomina, Jimenez, et al., 1987 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -1240.3 ± 0.31 | kcal/mol | Ccb | Colomina, Jimenez, et al., 1987 | Corresponding ΔfHºsolid = -110.1 kcal/mol (simple calculation by NIST; no Washburn corrections) |
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 |
---|---|---|---|---|---|
Tfus | 336.2 | K | N/A | Campbell and Spaeth, 1959 | Uncertainty assigned by TRC = 1.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 24.14 ± 0.1 | kcal/mol | V | Colomina, Jimenez, et al., 1987 | ALS |
ΔsubH° | 24.14 | kcal/mol | N/A | Colomina, Jimenez, et al., 1987 | DRB |
ΔsubH° | 24.14 ± 0.1 | kcal/mol | N/A | Colomina, Jimenez, et al., 1987 | AC |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
23.95 ± 0.1 | 310. | ME | Colomina, Jimenez, et al., 1987 | Based on data from 300. to 320. K.; 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: John E. Bartmess
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
C10H11O2- + =
By formula: C10H11O2- + H+ = C10H12O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 339.3 ± 2.2 | kcal/mol | G+TS | Fiedler, Kulhanek, et al., 1999 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 332.2 ± 2.0 | kcal/mol | IMRE | Fiedler, Kulhanek, et al., 1999 | gas phase |
Gas phase ion energetics 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: John E. Bartmess
De-protonation reactions
C10H11O2- + =
By formula: C10H11O2- + H+ = C10H12O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 339.3 ± 2.2 | kcal/mol | G+TS | Fiedler, Kulhanek, et al., 1999 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 332.2 ± 2.0 | kcal/mol | IMRE | Fiedler, Kulhanek, et al., 1999 | gas phase |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Colomina, Jimenez, et al., 1987
Colomina, M.; Jimenez, P.; Perez-Ossorio, R.; Roux, M.V.; Turrion, C.,
Thermochemical properties of benzoic acid derivatives. XIV. Enthalpies of combustion, vapour pressures, enthalpies of sublimation, and enthalpies of formation of o-, m-, and p-isopropylbenzoic acids,
J. Chem. Thermodyn., 1987, 19, 155-162. [all data]
Campbell and Spaeth, 1959
Campbell, B.N.; Spaeth, E.C.,
Freidel-Crafts Isopropylation of Acetophenone, Methyl Benzoate and Benzoic Acid,
J. Am. Chem. Soc., 1959, 81, 5933-6. [all data]
Fiedler, Kulhanek, et al., 1999
Fiedler, P.; Kulhanek, J.; Decouzon, M.; Gal, J.F.; Maria, P.C.; Exner, O.,
Steric effects and steric inhibition of resonance in isopropylbenzoic acids in the gas phase and in solution,
Coll. Czech. Chem. Commun., 1999, 64, 9, 1433-1447, https://doi.org/10.1135/cccc19991433
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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