Phenol, 4-ethyl-
- Formula: C8H10O
- Molecular weight: 122.1644
- IUPAC Standard InChIKey: HXDOZKJGKXYMEW-UHFFFAOYSA-N
- CAS Registry Number: 123-07-9
- 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: Phenol, p-ethyl-; p-Ethylphenol; 1-Ethyl-4-hydroxybenzene; 4-Ethylphenol; 1-Hydroxy-4-ethylbenzene; Paraethylphenol
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes
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 |
---|---|---|---|---|---|
ΔfH°solid | -53.64 ± 0.24 | kcal/mol | Ccb | Biddiscombe, Handley, et al., 1963 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -1040.35 ± 0.22 | kcal/mol | Ccb | Biddiscombe, Handley, et al., 1963 | Corresponding ΔfHºsolid = -53.63 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
49.45 | 298.15 | Nichols and Wads, 1975 | DH |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes
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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 490. ± 5. | K | AVG | N/A | Average of 17 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 319. ± 1. | K | AVG | N/A | Average of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 716.45 | K | N/A | Ambrose, 1963 | Uncertainty assigned by TRC = 0.8 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 19.20 ± 0.03 | kcal/mol | V | Biddiscombe, Handley, et al., 1963 | ALS |
ΔsubH° | 19.1 | kcal/mol | N/A | Biddiscombe, Handley, et al., 1963 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.7 | 459. | A,GS,EB | Stephenson and Malanowski, 1987 | Based on data from 444. to 503. K. See also Biddiscombe, Handley, et al., 1963, 2.; AC |
13.5 | 348. | N/A | Stage, Müller, et al., 1953 | Based on data from 337. to 503. K.; AC |
13.1 | 373. | N/A | Stage, Müller, et al., 1953 | Based on data from 337. to 503. K.; AC |
12.9 | 398. | N/A | Stage, Müller, et al., 1953 | Based on data from 337. to 503. K.; AC |
12.3 | 423. | N/A | Stage, Müller, et al., 1953 | Based on data from 337. to 503. K.; AC |
11.4 | 473. | N/A | Stage, Müller, et al., 1953 | Based on data from 337. to 503. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
444.90 to 502.29 | 4.13438 | 1550.369 | -116.136 | Biddiscombe, Handley, et al., 1963 | Coefficents calculated by NIST from author's data. |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References, Notes
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:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C8H10O+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.84 | EI | Russell, Freiser, et al., 1983 | LBLHLM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H7+ | 11.27 | ? | EI | Russell, Freiser, et al., 1983 | LBLHLM |
C7H7O+ | 10.39 | CH3 | EI | Russell, Freiser, et al., 1983 | LBLHLM |
C7H7O+ | 10.8 ± 0.1 | CH3 | EI | Tait, Shannon, et al., 1962 | RDSH |
De-protonation reactions
C8H9O- + =
By formula: C8H9O- + H+ = C8H10O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 349.7 ± 2.1 | kcal/mol | G+TS | Fujio, McIver, et al., 1981 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 342.9 ± 2.0 | kcal/mol | IMRE | Fujio, McIver, et al., 1981 | gas phase; value altered from reference due to change in acidity scale; B |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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. |
---|---|
Origin | NIST Mass Spectrometry Data Center |
NIST MS number | 341131 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Biddiscombe, Handley, et al., 1963
Biddiscombe, D.P.; Handley, R.; Harrop, D.; Head, A.J.; Lewis, G.B.; Martin, J.F.; Sprake, C.H.S.,
Thermodynamic properties of organic oxygen compounds. Part XIII. Preparation and physical properties of pure ethylphenols,
J. Chem. Soc., 1963, 5764-5768. [all data]
Nichols and Wads, 1975
Nichols, N.; Wads, I.,
Thermochemistry of solutions of biochemical model compounds. 3. Some benzene derivatives in aqueous solution,
J. Chem. Thermodynam., 1975, 7, 329-336. [all data]
Ambrose, 1963
Ambrose, D.,
Critical Temperatures of Some Phenols and Other Organic Compounds,
Trans. Faraday Soc., 1963, 59, 1988. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Biddiscombe, Handley, et al., 1963, 2
Biddiscombe, D.P.; Handley, R.; Harrop, D.; Head, A.J.; Lewis, G.B.; Martin, J.F.; Sprake, C.H.S.,
1099. Thermodynamic properties of organic oxygen compounds. Part XIII. Preparation and physical properties of pure ethylphenols,
J. Chem. Soc., 1963, 5764, https://doi.org/10.1039/jr9630005764
. [all data]
Stage, Müller, et al., 1953
Stage, H.; Müller, E.; Faldix, P.,
Erdol u Kohle, 1953, 6, 375. [all data]
Russell, Freiser, et al., 1983
Russell, D.H.; Freiser, B.S.; McBay, E.H.; Canada, D.C.,
The structure of decomposing [C7H7O]+ ions: Benzyl versus tropylium ion structures,
Org. Mass Spectrom., 1983, 18, 474. [all data]
Tait, Shannon, et al., 1962
Tait, J.M.S.; Shannon, T.W.; Harrison, A.G.,
The structure of substituted C7 ions from benzyl derivatives at the appearance potential threshold,
J. Am. Chem. Soc., 1962, 84, 4. [all data]
Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W.,
Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities,
J. Am. Chem. Soc., 1981, 103, 4017. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy Cp,solid Constant pressure heat capacity of solid Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid 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 at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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