Benzene, 1-chloro-3-methyl-
- Formula: C7H7Cl
- Molecular weight: 126.583
- IUPAC Standard InChIKey: OSOUNOBYRMOXQQ-UHFFFAOYSA-N
- CAS Registry Number: 108-41-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Toluene, m-chloro-; m-Chlorotoluene; m-Tolyl chloride; 1-Methyl-3-chlorobenzene; 3-Chloro-1-methylbenzene; 3-Chlorotoluene; 1-Chloro-3-methylbenzene; meta-Chlorotoluene; 1-Chloro-5-methylbenzene; NSC 8767
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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 |
---|---|---|---|---|---|
ΔcH°liquid | -896. ± 2. | kcal/mol | Ccb | Smith, Bjellerup, et al., 1953 | At 291.7 °K |
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 435.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 431.2 | K | N/A | Ogimachi, Andrews, et al., 1955 | Uncertainty assigned by TRC = 2. K; TRC |
Tboil | 434.89 | K | N/A | Stuckey and Saylor, 1940 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 225.35 | K | N/A | Martin, Yalkowsky, et al., 1979 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 224.26 | K | N/A | Brown and Stock, 1957 | Uncertainty assigned by TRC = 0.6 K; TRC |
Tfus | 246.9 | K | N/A | Timmermans, 1934 | as reported in Chem. Abstracts; TRC |
Tfus | 225.35 | K | N/A | Haase, 1893 | Uncertainty assigned by TRC = 2. K; TRC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
10.0 | 388. | N/A | Dykyj, Svoboda, et al., 1999 | Based on data from 373. to 435. K.; AC |
10.4 | 292. | A | Stephenson and Malanowski, 1987 | Based on data from 277. to 436. K. See also Stull, 1947.; AC |
11.0 | 288. | N/A | Stuckey and Saylor, 1940, 2 | Based on data from 273. to 348. 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 |
---|---|---|---|---|---|
277.9 to 435.5 | 4.47577 | 1807.576 | -32.105 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
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 by: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C7H6Cl- + =
By formula: C7H6Cl- + H+ = C7H7Cl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 374.0 ± 2.1 | kcal/mol | G+TS | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 366.9 ± 2.0 | kcal/mol | IMRE | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale |
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
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LL - Sharon G. Lias and Joel F. Liebman
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 187.4 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 180.3 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.7 ± 0.1 | EI | Tajima and Tsuchiya, 1972 | LLK |
8.83 ± 0.02 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H5+ | 15.7 ± 0.2 | C2H2+Cl | EI | Tajima and Tsuchiya, 1973 | LLK |
C5H5+ | 15.71 ± 0.15 | C2H2+Cl | EI | Tajima and Tsuchiya, 1972 | LLK |
C7H6Cl+ | 12.05 ± 0.07 | H | EI | Selim, Rabbih, et al., 1994 | LL |
C7H7+ | 11.25 ± 0.06 | Cl | EI | Selim, Rabbih, et al., 1994 | LL |
C7H7+ | 11.3 ± 0.1 | Cl | EI | Tajima and Tsuchiya, 1972 | LLK |
C7H7+ | 11.9 | Cl | EI | Yeo and Williams, 1970 | RDSH |
C7H7+ | 11.3 ± 0.1 | Cl | EI | Brown, 1970 | RDSH |
De-protonation reactions
C7H6Cl- + =
By formula: C7H6Cl- + H+ = C7H7Cl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 374.0 ± 2.1 | kcal/mol | G+TS | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 366.9 ± 2.0 | kcal/mol | IMRE | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale; B |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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.
Smith, Bjellerup, et al., 1953
Smith, L.; Bjellerup, L.; Krook, S.; Westermark, H.,
Heats of combustion of organic chloro compounds determined by the "quartz wool" method,
Acta Chem. Scand., 1953, 7, 65. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Ogimachi, Andrews, et al., 1955
Ogimachi, N.N.; Andrews, L.J.; Keefer, R.M.,
The Free Energies and Heats of Formation of Polyalkoxybenzene-Iodine Monochloride Complexes,
J. Am. Chem. Soc., 1955, 77, 4202. [all data]
Stuckey and Saylor, 1940
Stuckey, J.M.; Saylor, J.H.,
Vapor Pressures of Organic Compounds I.,
J. Am. Chem. Soc., 1940, 62, 2922. [all data]
Martin, Yalkowsky, et al., 1979
Martin, E.L.; Yalkowsky, S.H.; Wells, J.E.,
J. Pharm. Sci., 1979, 68, 565. [all data]
Brown and Stock, 1957
Brown, H.C.; Stock, L.M.,
J. Am. Chem. Soc., 1957, 79, 5175. [all data]
Timmermans, 1934
Timmermans, J.,
Theory of Concentrated Solutions XII.,
Bull. Soc. Chim. Belg., 1934, 43, 626. [all data]
Haase, 1893
Haase, E.,
Chem. Ber., 1893, 26, 1053. [all data]
Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R.,
Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [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]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Stuckey and Saylor, 1940, 2
Stuckey, James M.; Saylor, John H.,
The Vapor Pressures of Some Organic Compounds. I. 1,
J. Am. Chem. Soc., 1940, 62, 11, 2922-2925, https://doi.org/10.1021/ja01868a011
. [all data]
Caldwell and Bartmess
Caldwell, G.; Bartmess, J.E.,
, Unpublished results. [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]
Tajima and Tsuchiya, 1972
Tajima, S.; Tsuchiya, T.,
The effects of the repeller voltage and the shield voltage on appearance potential measurements by electron impact,
Shitsuryo Bunseki, 1972, 20, 117. [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]
Tajima and Tsuchiya, 1973
Tajima, S.; Tsuchiya, T.,
Energetics consideration of C5H5+ ions produced from various precursors by electron impact,
Bull. Chem. Soc. Jpn., 1973, 46, 3291. [all data]
Selim, Rabbih, et al., 1994
Selim, E.T.M.; Rabbih, M.A.; Fahmey, M.A.; Hawash, M.F.,
Loss of H and Cl from the molecular ions of chlorotoluene isomers using electron impact mass spectrometry,
Int. J. Mass Spectrom. Ion Processes, 1994, 134, 119. [all data]
Yeo and Williams, 1970
Yeo, A.N.H.; Williams, D.H.,
Rearrangement in the molecular ions of halogenotoluenes prior to fragmentation in the mass spectrometer,
Chem. Commun., 1970, 886. [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, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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