Benzenamine, N-ethyl-
- Formula: C8H11N
- Molecular weight: 121.1796
- IUPAC Standard InChIKey: OJGMBLNIHDZDGS-UHFFFAOYSA-N
- CAS Registry Number: 103-69-5
- 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: Aniline, N-ethyl-; Anilinoethane; Ethylaniline; Ethylphenylamine; N-Ethyl-N-phenylamine; N-Ethylaminobenzene; N-Ethylaniline; N-Ethylbenzenamine; Aethylanilin; UN 2272; NSC 8736; N-EthylaniIine
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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 13.4 | kcal/mol | Ccb | Vriens and Hill, 1952 | ALS |
ΔfH°gas | 5.52 | kcal/mol | N/A | Lemoult, 1907 | Value computed using ΔfHliquid° value of -29.0 kj/mol from Lemoult, 1907 and ΔvapH° value of 52.1 kj/mol from Vriens and Hill, 1952.; DRB |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -1126.9 | kcal/mol | Ccb | Lemoult, 1907 | ALS |
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°liquid | 0.9 | kcal/mol | Ccb | Vriens and Hill, 1952 | |
ΔfH°liquid | -7.0 | kcal/mol | Ccb | Lemoult, 1907 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -1129.1 ± 1.0 | kcal/mol | Ccb | Vriens and Hill, 1952 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1129.8 kcal/mol |
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:
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 | 479. ± 1. | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 209.65 | K | N/A | Timmermans, 1914 | Uncertainty assigned by TRC = 0.4 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 13.9 ± 0.1 | kcal/mol | N/A | Verevkin, 1997 | Based on data from 279. to 318. K.; AC |
ΔvapH° | 12.5 | kcal/mol | V | Vriens and Hill, 1952 | ALS |
ΔvapH° | 12.5 | kcal/mol | N/A | Vriens and Hill, 1952 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.5 | 326. | A | Stephenson and Malanowski, 1987 | Based on data from 311. to 477. 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 |
---|---|---|---|---|---|
323. to 479.9 | 5.63704 | 2809.017 | 20.856 | Nelson and Wales, 1925 | Coefficents calculated by NIST from author's data. |
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 as indicated in comments:
B - John E. Bartmess
ALS - 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
C8H10N- + =
By formula: C8H10N- + H+ = C8H11N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 364.1 ± 2.1 | kcal/mol | G+TS | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 356.8 ± 2.0 | kcal/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
By formula: C8H11N + HNO2 = C8H10N2O + H2O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -18.84 | kcal/mol | Cm | Swientoslawski, 1910 | liquid phase; ALS |
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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 221.0 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 213.4 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.56 | CTS | Farrell and Newton, 1965 | RDSH |
7.5 | CTS | Briegleb and Czekalla, 1959 | RDSH |
7.67 ± 0.06 | PE | Rozeboom, Houk, et al., 1982 | Vertical value; LBLHLM |
De-protonation reactions
C8H10N- + =
By formula: C8H10N- + H+ = C8H11N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 364.1 ± 2.1 | kcal/mol | G+TS | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 356.8 ± 2.0 | kcal/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
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.
Vriens and Hill, 1952
Vriens, G.N.; Hill, A.G.,
Equilibria of several reactions of aromatic amines,
Ind. Eng. Chem., 1952, 44, 2732-27. [all data]
Lemoult, 1907
Lemoult, M.P.,
Recherches theoriques et experimentales sur les chaleurs de combustion et de formation des composes organiques,
Ann. Chim. Phys., 1907, 12, 395-432. [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]
Timmermans, 1914
Timmermans, J.,
Freezing temperature of organic compounds. II.,
Bull. Soc. Chim. Belg., 1914, 27, 334. [all data]
Verevkin, 1997
Verevkin, Sergey P.,
Thermochemistry of amines: experimental standard molar enthalpies of formation of some aliphatic and aromatic amines,
The Journal of Chemical Thermodynamics, 1997, 29, 8, 891-899, https://doi.org/10.1006/jcht.1997.0212
. [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]
Nelson and Wales, 1925
Nelson, O.A.; Wales, H.,
Vapor Pressures and Boiling Points of Mono- and Dimthylanilines and Mono- and Diethylanilines,
J. Am. Chem. Soc., 1925, 47, 3, 867-872, https://doi.org/10.1021/ja01680a040
. [all data]
Taft, 1987
Taft, R.W.,
The Nature and Analysis of Substitutent Electronic Effects,
Personal communication. See also Prog. Phys. Org. Chem., 1987, 16, 1. [all data]
Swientoslawski, 1910
Swientoslawski, W.,
Thermochemische Untersuchungen der organischen Verbindungen. Dritte Mitteilung. Stickstoffhaltige Verbindungen.,
Z. Phys. Chem., 1910, 72, 49-83. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Farrell and Newton, 1965
Farrell, P.G.; Newton, J.,
Ionization potentials of aromatic amines,
J. Phys. Chem., 1965, 69, 3506. [all data]
Briegleb and Czekalla, 1959
Briegleb, G.; Czekalla, J.,
Die Bestimmung von lonisierungsenergien aus den Spektren von Elektronenubergangskomplexen,
Z.Elektrochem., 1959, 63, 6. [all data]
Rozeboom, Houk, et al., 1982
Rozeboom, M.D.; Houk, K.N.; Searles, S.; Seyedrezai, S.E.,
Photoelectron spectroscopy of N-aryl cyclic amines. Variable conformations and relationships to gas- and solution-phase basicities,
J. Am. Chem. Soc., 1982, 104, 3448. [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:
Tboil Boiling point Tfus Fusion (melting) point ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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