Benzenamine, N-ethyl-

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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:
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
Δvap13.9 ± 0.1kcal/molN/AVerevkin, 1997Based on data from 279. to 318. K.; AC
Δvap12.5kcal/molVVriens and Hill, 1952ALS
Δvap12.5kcal/molN/AVriens and Hill, 1952DRB

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
12.5326.AStephenson and Malanowski, 1987Based 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 479.95.637042809.01720.856Nelson 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)221.0kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity213.4kcal/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
Δr364.1 ± 2.1kcal/molG+TSTaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr356.8 ± 2.0kcal/molIMRETaft, 1987gas phase; value altered from reference due to change in acidity scale; B

References

Go To: Top, Phase change 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.

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]

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]

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

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