Benzyl chloride
- Formula: C7H7Cl
- Molecular weight: 126.583
- IUPAC Standard InChIKey: KCXMKQUNVWSEMD-UHFFFAOYSA-N
- CAS Registry Number: 100-44-7
- 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. - Other names: Benzene, (chloromethyl)-; Toluene, α-chloro-; α-Chlorotoluene; ω-Chlorotoluene; (Chloromethyl)benzene; Chlorophenylmethane; C6H5CH2Cl; α-Chlortoluol; Benzile (cloruro di); Benzylchlorid; Benzyle (chlorure de); Chlorure de benzyle; NCI-C06360; Rcra waste number P028; UN 1738; Phenylmethyl chloride; NSC 8043; Tolyl chloride
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 4.5 ± 0.8 | kcal/mol | Cm | Kirkbride, 1956 | heat of formation derived by Cox and Pilcher, 1970 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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 |
---|---|---|---|---|---|
ΔfH°liquid | -7.8 ± 0.6 | kcal/mol | Cm | Kirkbride, 1956 | heat of formation derived by Cox and Pilcher, 1970; ALS |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
43.59 | 298.5 | Smith and Andrews, 1931 | T = 102 to 299 K. Value is unsmoothed experimental datum.; DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, 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:
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 452. ± 3. | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 233.95 | K | N/A | Timmermans and Hennaut-Roland, 1935 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 233.45 | K | N/A | Smith and Andrews, 1931, 2 | Uncertainty assigned by TRC = 0.4 K; freezing point by thermocouple; TRC |
Tfus | 225.3 | K | N/A | Altschul and Von Schneider, 1895 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 12.0 ± 0.07 | kcal/mol | GS | Krasnykh, Vasiltsova, et al., 2002 | Based on data from 276. to 309. K.; AC |
ΔvapH° | 11.9 | kcal/mol | CGC | Krasnykh, Vasiltsova, et al., 2002 | AC |
ΔvapH° | 12.0 ± 0.1 | kcal/mol | N/A | Ashcroft, 1976 | See also Dykyj, Svoboda, et al., 1999.; AC |
ΔvapH° | 12.3 ± 0.4 | kcal/mol | V | Kirkbride, 1956 | heat of formation derived by Cox and Pilcher, 1970; ALS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
11.6 | 335. | A,I | Stephenson and Malanowski, 1987 | Based on data from 320. to 390. K. See also Ashcroft, 1976.; AC |
11.6 | 310. | A | Stephenson and Malanowski, 1987 | Based on data from 295. to 453. K. See also Stull, 1947.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
295. to 452.6 | 4.67692 | 1932.142 | -39.396 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
2.09 | 230. | DSC | Ahmed and Eades, 1972 | AC |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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 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° | 396.6 ± 1.6 | kcal/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 388.8 ± 1.7 | kcal/mol | H-TS | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes |
C7H6Cl- + =
By formula: C7H6Cl- + H+ = C7H7Cl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 372.0 ± 2.1 | kcal/mol | G+TS | Poutsma, Nash, et al., 1997 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 364.9 ± 2.0 | kcal/mol | IMRB | Poutsma, Nash, et al., 1997 | gas phase |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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 compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.10 ± 0.02 | PI | Traeger and Kompe, 1990 | LL |
9.14 ± 0.01 | PI | Ponomarev, Takhimova, et al., 1974 | LLK |
9.14 ± 0.01 | PI | Akopyan, Vilesov, et al., 1972 | LLK |
9.10 ± 0.05 | PI | Akopyan and Vilesov, 1966 | RDSH |
9.30 | PE | Zverev and Ermolaeva, 1981 | Vertical value; LLK |
9.29 | PE | Kimura, Katsumata, et al., 1981 | Vertical value; LLK |
9.30 | PE | Schmidt and Schweig, 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C7H7+ | 9.85 ± 0.02 | Cl | PI | Traeger and Kompe, 1990 | LL |
C7H7+ | 10.16 ± 0.05 | Cl | PI | Akopyan, Vilesov, et al., 1972 | LLK |
C7H7+ | 10.40 ± 0.05 | Cl | PI | Akopyan and Vilesov, 1966 | RDSH |
De-protonation reactions
C7H6Cl- + =
By formula: C7H6Cl- + H+ = C7H7Cl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 396.6 ± 1.6 | kcal/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 388.8 ± 1.7 | kcal/mol | H-TS | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
C7H6Cl- + =
By formula: C7H6Cl- + H+ = C7H7Cl
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 372.0 ± 2.1 | kcal/mol | G+TS | Poutsma, Nash, et al., 1997 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 364.9 ± 2.0 | kcal/mol | IMRB | Poutsma, Nash, et al., 1997 | gas phase; B |
References
Go To: Top, Gas phase thermochemistry data, 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.
Kirkbride, 1956
Kirkbride, F.W.,
The heats of chlorination of some hydrocarbons and their chloro-derivatives,
J. Appl. Chem., 1956, 6, 11-21. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Smith and Andrews, 1931
Smith, R.H.; Andrews, D.H.,
Thermal energy studies. I. Phenyl derivatives of methane,
ethane and some related compounds. J. Am. Chem. Soc., 1931, 53, 3644-3660. [all data]
Timmermans and Hennaut-Roland, 1935
Timmermans, J.; Hennaut-Roland, M.,
Physical constants of 20 organic compounds. VII.,
J. Chim. Phys. Phys.-Chim. Biol., 1935, 32, 501. [all data]
Smith and Andrews, 1931, 2
Smith, R.H.; Andrews, D.H.,
Thermal Energy Studies I. Phenyl Derivatives of Methane, Ethane and Some Related Compounds,
J. Am. Chem. Soc., 1931, 53, 3644. [all data]
Altschul and Von Schneider, 1895
Altschul, M.; Von Schneider, B.,
Freezing points of some organic fluids,
Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1895, 16, 24. [all data]
Krasnykh, Vasiltsova, et al., 2002
Krasnykh, Eugen L.; Vasiltsova, Tatiana V.; Verevkin, Sergey P.; Heintz, Andreas,
Vapor Pressures and Enthalpies of Vaporization of Benzyl Halides and Benzyl Ethers,
J. Chem. Eng. Data, 2002, 47, 6, 1372-1378, https://doi.org/10.1021/je020034h
. [all data]
Ashcroft, 1976
Ashcroft, Stanley J.,
Vapor pressures and enthalpies of vaporization of benzyl halides,
J. Chem. Eng. Data, 1976, 21, 4, 397-398, https://doi.org/10.1021/je60071a009
. [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]
Ahmed and Eades, 1972
Ahmed, A.M.I.; Eades, R.G.,
Proton magnetic relaxation in toluene and some derivatives,
J. Chem. Soc., Faraday Trans. 2, 1972, 68, 1623, https://doi.org/10.1039/f29726801623
. [all data]
Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R.,
Determination of the gas-phase acidities of halogen-substituted aromatic compounds using the silane-cleavage method,
J. Mass Spectrom., 1995, 30, 1, 17, https://doi.org/10.1002/jms.1190300105
. [all data]
Poutsma, Nash, et al., 1997
Poutsma, J.C.; Nash, J.J.; Paulino, J.A.; Squires, R.R.,
Absolute Heats of Formation of Phenylcarbene and Vinylcarbene,
J. Am. Chem. Soc., 1997, 119, 20, 4686, https://doi.org/10.1021/ja963918s
. [all data]
Traeger and Kompe, 1990
Traeger, J.C.; Kompe, B.M.,
Threshold C7H7 formation from the benzyl halides by photoionization mass spectrometry,
Int. J. Mass Spectrom. Ion Processes, 1990, 101, 111. [all data]
Ponomarev, Takhimova, et al., 1974
Ponomarev, D.A.; Takhimova, V.V.; Akopyan, M.E.; Sergeyev, Y.L.,
Effect of alkyl groups on the stability of cations in the absence of solvation effects,
Zh. Org. Khim., 1974, 10, 403. [all data]
Akopyan, Vilesov, et al., 1972
Akopyan, M.E.; Vilesov, F.I.; Lopatin, S.N.,
Photoionization of benzyl chloride,
Khim. Vys. Energ., 1972, 6, 110. [all data]
Akopyan and Vilesov, 1966
Akopyan, M.E.; Vilesov, F.I.,
A mass-spectrometric study of the photo-ionisation of benzene derivatives at wavelengths up to 885 A,
Zh. Fiz. Khim., 1966, 40, 125, In original 63. [all data]
Zverev and Ermolaeva, 1981
Zverev, V.V.; Ermolaeva, L.V.,
Ionization potentials and intramolecular charge transfer. II. The photoelectron spectrum and electronic structure of trichloromethylbenzene,
Zh. Strukt. Khim., 1981, 22, 22. [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]
Schmidt and Schweig, 1973
Schmidt, H.; Schweig, A.,
C-Hal hyperkonjugation,
Tetrahedron Lett., 1973, 981. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid Tboil Boiling point Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.