Benzene, 1,4-dichloro-
- Formula: C6H4Cl2
- Molecular weight: 147.002
- IUPAC Standard InChIKey: OCJBOOLMMGQPQU-UHFFFAOYSA-N
- CAS Registry Number: 106-46-7
- 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. - Isotopologues:
- Other names: Benzene, p-dichloro-; p-Chlorophenyl chloride; p-Dichlorobenzene; Di-chloricide; Evola; Paradi; Paradow; Paramoth; Persia-Perazol; PDB; Santochlor; 1,4-Dichlorobenzene; p-Dichlorobenzol; Paradichlorobenzol; para-Dichlorobenzene; p-Dichloorbenzeen; p-Dichlorbenzol; p-Diclorobenzene; Dichlorobenzene; Dichlorobenzene, p-; NCI-C54955; para crystals; Paracide; Paranuggets; Parazene; 1,4-Dichloorbenzeen; 1,4-Dichlor-benzol; 1,4-Diclorobenzene; Dichlorobenzene, para; Globol; Paradichlorbenzol; Rcra waste number U070; Rcra waste number U071; Rcra waste number U072; UN 1592; Dichlorocide; Kaydox; p-Dichlorbenzene; NSC 36935; 1,4-chlorobenzene
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 24.6 | kJ/mol | Ccr | Platonov and Simulin, 1984 |
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
C6H3Cl2- + =
By formula: C6H3Cl2- + H+ = C6H4Cl2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1577. ± 8.8 | kJ/mol | G+TS | Schlosser, Marzi, et al., 2001 | gas phase; Acid: p-dichlorobenzene.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1543. ± 8.4 | kJ/mol | IMRE | Schlosser, Marzi, et al., 2001 | gas phase; Acid: p-dichlorobenzene.; B |
By formula: C6H4Cl2 = C6H4Cl2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4.0 | kJ/mol | Eqk | Godnev and Sverdlin, 1961 | gas phase; Correction of 56GOD/SVE; ALS |
By formula: C6H4Cl2 = C6H4Cl2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.803 | kJ/mol | Eqk | Godnev and Sverdlin, 1961 | gas phase; Correction of 56GOD/SVE; 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:
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 8.92 ± 0.03 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH°(+) ion | 883.2 | kJ/mol | N/A | N/A | |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH(+) ion,0K | 895.8 | kJ/mol | N/A | N/A |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.95 | PE | Fujisawa, Oonishi, et al., 1991 | LL |
8.92 ± 0.02 | PIPECO | Olesik, Baer, et al., 1986 | LBLHLM |
8.97 ± 0.03 | PE | Ruscic, Klasinc, et al., 1981 | LLK |
8.94 | PE | Kimura, Katsumata, et al., 1981 | LLK |
8.98 ± 0.02 | PE | Maier and Marthaler, 1978 | LLK |
8.89 ± 0.01 | EQ | Lias and Ausloos, 1978 | LLK |
8.94 ± 0.01 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
8.95 | PI | Bralsford, Harris, et al., 1960 | RDSH |
8.988 | PE | Potts, Lyus, et al., 1980 | Vertical value; LLK |
9.00 | PE | Streets and Ceasar, 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H4Cl+ | 13.2 ± 0.1 | Cl | EI | Brown, 1970 | RDSH |
De-protonation reactions
C6H3Cl2- + =
By formula: C6H3Cl2- + H+ = C6H4Cl2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1577. ± 8.8 | kJ/mol | G+TS | Schlosser, Marzi, et al., 2001 | gas phase; Acid: p-dichlorobenzene.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1543. ± 8.4 | kJ/mol | IMRE | Schlosser, Marzi, et al., 2001 | gas phase; Acid: p-dichlorobenzene.; B |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
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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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
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 | Chuck Anderson, Aldrich Chemical Co. |
NIST MS number | 107698 |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, 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.
Platonov and Simulin, 1984
Platonov, V.A.; Simulin, Yu.N.,
Experimental determination of the standard enthalpies of formation of polychlorobenzenes. II. Standard enthalpies of formation of dichlorobenzenes,
Russ. J. Phys. Chem. (Engl. Transl.), 1984, 58, 1630-1632. [all data]
Schlosser, Marzi, et al., 2001
Schlosser, M.; Marzi, E.; Cottet, F.; Buker, H.H.; Nibbering, N.M.M.,
The acidity of chloro-substituted benzenes: A comparison of gas phase, ab initio, and kinetic data,
Chem. Eur. J., 2001, 7, 16, 3511-3516, https://doi.org/10.1002/1521-3765(20010817)7:16<3511::AID-CHEM3511>3.0.CO;2-U
. [all data]
Godnev and Sverdlin, 1961
Godnev, I.N.; Sverdlin, A.S.,
Equilibrium and dichlorobenzene isomer (Corrections),
Russ. J. Phys. Chem. (Engl. Transl.), 1961, 35, 231-232. [all data]
Fujisawa, Oonishi, et al., 1991
Fujisawa, S.; Oonishi, I.; Masuda, S.; Ohno, K.; Harada, Y.,
Penning ionization electron spectroscopy of dichlorobenzenes,
J. Phys. Chem., 1991, 95, 4250. [all data]
Olesik, Baer, et al., 1986
Olesik, S.; Baer, T.; Morrow, J.C.,
Dissociation rates of energy-selected dichloro- and dibromobenzene ions,
J. Phys. Chem., 1986, 90, 3563. [all data]
Ruscic, Klasinc, et al., 1981
Ruscic, B.; Klasinc, L.; Wolf, A.; Knop, J.V.,
Photoelectron spectra of and Ab initio calculations on chlorobenzenes. 1. Chlorobenzene and dichlorobenzenes,
J. Phys. Chem., 1981, 85, 1486. [all data]
Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S.,
Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules
in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]
Maier and Marthaler, 1978
Maier, J.P.; Marthaler, O.,
Emission spectra of the radical cations of 1,3-dichlorobenzene, 1,4-dichlorobenzene and 1,3,5-trichlorobenzene in the gas phase,
Chem. Phys., 1978, 32, 419. [all data]
Lias and Ausloos, 1978
Lias, S.G.; Ausloos, P.J.,
eIonization energies of organic compounds by equilibrium measurements,
J. Am. Chem. Soc., 1978, 100, 6027. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Bralsford, Harris, et al., 1960
Bralsford, R.; Harris, P.V.; Price, W.C.,
The effect of fluorine on the electronic spectra and ionization potentials of molecules,
Proc. Roy. Soc. (London), 1960, A258, 459. [all data]
Potts, Lyus, et al., 1980
Potts, A.W.; Lyus, M.L.; Lee, E.P.F.; Fattahallah, G.H.,
High resolution ultraviolet photoelectron spectra of C6H5X and p-C6H4X2 where X = Cl, Br or I,
J. Chem. Soc. Faraday Trans. 2, 1980, 76, 556. [all data]
Streets and Ceasar, 1973
Streets, D.G.; Ceasar, G.P.,
Inductive mesomeric effects on the π orbitals of halobenzenes,
Mol. Phys., 1973, 26, 1037. [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, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy ΔfH(+) ion,0K Enthalpy of formation of positive ion at 0K ΔfH°gas Enthalpy of formation of gas 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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