p-Chloroaniline

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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

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Individual Reactions

C6H5ClN- + Hydrogen cation = p-Chloroaniline

By formula: C6H5ClN- + H+ = C6H6ClN

Quantity Value Units Method Reference Comment
Δr1508. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1477. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

Benzenamine, 4-chloro-N-methyl- = 0.5p-Chloroaniline + 0.5Benzenamine, 4-chloro-N,N-dimethyl-

By formula: C7H8ClN = 0.5C6H6ClN + 0.5C8H10ClN

Quantity Value Units Method Reference Comment
Δr-0.2kJ/molEqkMatvienko, Kachurin, et al., 1982liquid phase; Methanesulfonic acid; ALS

Urea, N,N'-bis(4-chlorophenyl)- = Benzene, 1-chloro-4-isocyanato- + p-Chloroaniline

By formula: C13H10Cl2N2O = C7H4ClNO + C6H6ClN

Quantity Value Units Method Reference Comment
Δr120.5 ± 1.1kJ/molEqkChimishkyan, Svetlova, et al., 1984solid phase; Dissociation; ALS

p-Chloroaniline + Maleic anhydride = Maleanilic acid, 4' chloro-

By formula: C6H6ClN + C4H2O3 = C10H8ClNO3

Quantity Value Units Method Reference Comment
Δr13.kJ/molCmSrivastava, 1979solid phase; ALS

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, References, Notes

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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C6H6ClN+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)873.8kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity842.0kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
7.8 ± 0.1CTSFarrell and Newton, 1966RDSH
8.00CTSKinoshita, 1962RDSH
8.18PEBaker, May, et al., 1968Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H5Cl+12.24HCNEIHowe and Williams, 1969RDSH
C6H6N+12.5 ± 0.1ClEIBrown, 1970RDSH
C6H6N+12.37ClEIHowe and Williams, 1969RDSH

De-protonation reactions

C6H5ClN- + Hydrogen cation = p-Chloroaniline

By formula: C6H5ClN- + H+ = C6H6ClN

Quantity Value Units Method Reference Comment
Δr1508. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1477. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

References

Go To: Top, 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.

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Matvienko, Kachurin, et al., 1982
Matvienko, N.M.; Kachurin, O.I.; Chekhuta, V.G., Kinetics and equilibrium of the transalkylation reaction of N-methylarylamines, Russ. Chem. Rev., 1982, 48, 42-45. [all data]

Chimishkyan, Svetlova, et al., 1984
Chimishkyan, A.L.; Svetlova, L.P.; Leonova, T.V.; Gluyaev, N.D., Thermal decomposition of substituted ureas, J. Gen. Chem. USSR, 1984, 54, 1317-1320. [all data]

Srivastava, 1979
Srivastava, A.K., Solid-state reactions between maleic anhydride and substituted aromactic amines, Z. Phys. Chem. (Leipzig), 1979, 260, 630-640. [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, 1966
Farrell, P.G.; Newton, J., Ionization potentials of primary aromatic amines and aza-hydrocarbons, Tetrahedron Lett., 1966, 5517. [all data]

Kinoshita, 1962
Kinoshita, M., The absorption spectra of the molecular complexes of aromatic compounds with p-bromanil, Bull. Chem. Soc. Japan, 1962, 35, 1609. [all data]

Baker, May, et al., 1968
Baker, A.D.; May, D.P.; Turner, D.W., Molecular photoelectron spectroscopy. Part VII. The vertical ionisation potentials of benzene and some of its monosubstituted and 1,4-disubstituted derivatives, J. Chem. Soc. B, 1968, 22. [all data]

Howe and Williams, 1969
Howe, I.; Williams, D.H., Calculation and qualitative predictions of mass spectra. Mono- and paradisubstituted benzenes, J. Am. Chem. Soc., 1969, 91, 7137. [all data]

Brown, 1970
Brown, P., Kinetic studies in mass spectrometry-IV. The [M - Cl] reaction in substituted chlorobenzenes and the question of molecular ion isomerization, Org. Mass Spectrom., 1970, 3, 639. [all data]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References