p-Chloroaniline
- Formula: C6H6ClN
- Molecular weight: 127.572
- IUPAC Standard InChIKey: QSNSCYSYFYORTR-UHFFFAOYSA-N
- CAS Registry Number: 106-47-8
- 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: 4-Chloroaniline; Aniline, p-chloro-; p-Aminochlorobenzene; p-Chlorophenylamine; p-Ca; 1-Amino-4-chlorobenzene; 4-Chloro-1-aminobenzene; 4-Chlorobenzenamine; Benzenamine, 4-chloro-; p-Chloraniline; NCI-C02039; 4-Chlorophenylamine; Aniline, 4-chloro-; Benzeneamine, 4-chloro; 4-Chloranilin; Rcra waste number P024; 4-Amino-1-chlorobenzene; 4-Aminochlorobenzene; NSC 36941
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Condensed phase thermochemistry data
Go To: Top, 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔcH°liquid | -3339. ± 13. | kJ/mol | Ccb | Zalikin, Kochetkov, et al., 1965 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH°solid | -33.3 | kJ/mol | Ccb | Masalitinova, Oleinikova, et al., 1981 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -3208.8 ± 1.9 | kJ/mol | Ccb | Masalitinova, Oleinikova, et al., 1981 | ALS |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
147.3 | 305. | Zalikin, Kochetkov, et al., 1965 | T = 292 to 323 K. Mean value.; DH |
Gas phase ion energetics data
Go To: Top, Condensed phase 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) | 873.8 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 842.0 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.8 ± 0.1 | CTS | Farrell and Newton, 1966 | RDSH |
8.00 | CTS | Kinoshita, 1962 | RDSH |
8.18 | PE | Baker, May, et al., 1968 | Vertical value; RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H5Cl+ | 12.24 | HCN | EI | Howe and Williams, 1969 | RDSH |
C6H6N+ | 12.5 ± 0.1 | Cl | EI | Brown, 1970 | RDSH |
C6H6N+ | 12.37 | Cl | EI | Howe and Williams, 1969 | RDSH |
De-protonation reactions
C6H5ClN- + =
By formula: C6H5ClN- + H+ = C6H6ClN
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1508. ± 8.8 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1477. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
References
Go To: Top, Condensed phase 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.
Zalikin, Kochetkov, et al., 1965
Zalikin, A.A.; Kochetkov, V.L.; Strepikheev, Yu.A.,
Some physical and physicochemical constants of m- and p-chloroaniline and of m- and p-chlorophenyl isocyanate,
Khim. Prom. (Moscow), 1965, 41, 338. [all data]
Masalitinova, Oleinikova, et al., 1981
Masalitinova, T.N.; Oleinikova, T.P.; Ryadnenko, V.L.; Kiseleva, N.N.; Lebedeva, N.D.,
Thermal effects of the hydrogenation of chloronitrobenzenes,
J. Appl. Chem. USSR, 1981, 54, 1551-1554, In original 1799. [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]
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]
Notes
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,solid Constant pressure heat capacity of solid ΔcH°liquid Enthalpy of combustion of liquid at standard conditions 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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