Benzenamine, N-ethyl-

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Gas 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 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
Δfgas56.1kJ/molCcbVriens and Hill, 1952ALS
Δfgas23.1kJ/molN/ALemoult, 1907Value 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
Δcgas-4714.9kJ/molCcbLemoult, 1907ALS

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
Δfliquid4.kJ/molCcbVriens and Hill, 1952 
Δfliquid-29.kJ/molCcbLemoult, 1907 
Quantity Value Units Method Reference Comment
Δcliquid-4724.2 ± 4.2kJ/molCcbVriens and Hill, 1952Reanalyzed by Cox and Pilcher, 1970, Original value = -4727.1 kJ/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
Tboil479. ± 1.KAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus209.65KN/ATimmermans, 1914Uncertainty assigned by TRC = 0.4 K; TRC
Quantity Value Units Method Reference Comment
Δvap58.3 ± 0.6kJ/molN/AVerevkin, 1997Based on data from 279. to 318. K.; AC
Δvap52.3kJ/molVVriens and Hill, 1952ALS
Δvap52.1kJ/molN/AVriens and Hill, 1952DRB

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
52.2326.AStephenson and Malanowski, 1987Based on data from 311. to 477. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
323. to 479.95.642752809.01720.856Nelson and Wales, 1925Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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)924.8kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity892.9kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
7.56CTSFarrell and Newton, 1965RDSH
7.5CTSBriegleb and Czekalla, 1959RDSH
7.67 ± 0.06PERozeboom, Houk, et al., 1982Vertical value; LBLHLM

De-protonation reactions

C8H10N- + Hydrogen cation = Benzenamine, N-ethyl-

By formula: C8H10N- + H+ = C8H11N

Quantity Value Units Method Reference Comment
Δr1523. ± 8.8kJ/molG+TSTaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1493. ± 8.4kJ/molIMRETaft, 1987gas phase; value altered from reference due to change in acidity scale; B

Mass spectrum (electron ionization)

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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

Spectrum

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Mass spectrum
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Additional Data

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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, 1998.
NIST MS number 291378

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References

Go To: Top, Gas phase thermochemistry data, 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.

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]

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]

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]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References