Benzenethiol
- Formula: C6H6S
- Molecular weight: 110.177
- IUPAC Standard InChIKey: RMVRSNDYEFQCLF-UHFFFAOYSA-N
- CAS Registry Number: 108-98-5
- 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: Mercaptobenzene; Phenol, thio-; Phenyl mercaptan; Phenylthiol; Thiophenol; Rcra waste number P014; Thiofenol; UN 2337; USAF XR-19; NSC 6953; 930-69-8
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Reaction 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:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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
By formula: C6H5S- + H+ = C6H6S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 340.4 ± 2.1 | kcal/mol | G+TS | Taft and Bordwell, 1988 | gas phase; B |
ΔrH° | >340.1 ± 1.8 | kcal/mol | D-EA | Richardson, Stephenson, et al., 1975 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 333.4 ± 2.1 | kcal/mol | IMRE | Guillemin, Riague, et al., 2005 | gas phase; B |
ΔrG° | 333.8 ± 2.0 | kcal/mol | IMRE | Taft and Bordwell, 1988 | gas phase; B |
ΔrG° | >333.5 ± 1.9 | kcal/mol | H-TS | Richardson, Stephenson, et al., 1975 | gas phase; B |
By formula: H2O + C8H8OS = C6H6S + C2H4O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -2.97 ± 0.08 | kcal/mol | Cm | Wadso, 1960 | liquid phase; Heat of hydrolysis; 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:
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
View reactions leading to C6H6S+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 8.30 ± 0.01 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.3 ± 0.05 | TRPI | Faulk, Dunbar, et al., 1990 | LL |
8.3 | PE | Ashby, Enemark, et al., 1988 | LL |
8.3 | PE | Carnovale, Kibel, et al., 1982 | LBLHLM |
8.36 | CTS | Aloisi, Santini, et al., 1974 | LLK |
9.0 ± 0.1 | EI | Henion and Kingston, 1973 | LLK |
8.28 | PE | Frost, Herring, et al., 1972 | LLK |
8.32 ± 0.01 | PI | Matsunaga, 1961 | RDSH |
8.5 | PE | Ashby, Enemark, et al., 1988 | Vertical value; LL |
8.49 | PE | Carnovale, Kibel, et al., 1982 | Vertical value; LBLHLM |
8.47 | PE | Dewar, Ernstbrunner, et al., 1974 | Vertical value; LLK |
Appearance energy determinations
De-protonation reactions
By formula: C6H5S- + H+ = C6H6S
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 340.4 ± 2.1 | kcal/mol | G+TS | Taft and Bordwell, 1988 | gas phase; B |
ΔrH° | >340.1 ± 1.8 | kcal/mol | D-EA | Richardson, Stephenson, et al., 1975 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 333.4 ± 2.1 | kcal/mol | IMRE | Guillemin, Riague, et al., 2005 | gas phase; B |
ΔrG° | 333.8 ± 2.0 | kcal/mol | IMRE | Taft and Bordwell, 1988 | gas phase; B |
ΔrG° | >333.5 ± 1.9 | kcal/mol | H-TS | Richardson, Stephenson, et al., 1975 | gas phase; 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.
Taft and Bordwell, 1988
Taft, R.W.; Bordwell, F.G.,
Structural and Solvent Effects Evaluated from Acidities Measured in Dimethyl Sulfoxide and in the Gas Phase,
Acc. Chem. Res., 1988, 21, 12, 463, https://doi.org/10.1021/ar00156a005
. [all data]
Richardson, Stephenson, et al., 1975
Richardson, J.H.; Stephenson, L.M.; Brauman, J.I.,
Photodetachment of electrons from phenoxides and thiophenoxide,
J. Am. Chem. Soc., 1975, 97, 2967. [all data]
Guillemin, Riague, et al., 2005
Guillemin, J.C.; Riague, E.H.; Gal, J.F.; Maria, P.C.; Mo, O.; Yanez, M.,
Acidity trends in alpha,beta-unsaturated sulfur, selenium, and tellurium derivatives: Comparison with C-, Si-, Ge-, Sn-, N-, P-, As-, and Sb-containing analogues,
Chem. Eur. J., 2005, 11, 7, 2145-2153, https://doi.org/10.1002/chem.200400989
. [all data]
Wadso, 1960
Wadso, I.,
Heats of hydrolysis of phenyl acetate and phenyl thiolacetate,
Acta Chem. Scand., 1960, 14, 561-565. [all data]
Faulk, Dunbar, et al., 1990
Faulk, J.D.; Dunbar, R.C.; Lifshitz, C.,
Slow Dissociations of thiophenol molecular ion. Study by TRPD and TPIMS,
J. Am. Chem. Soc., 1990, 112, 7893. [all data]
Ashby, Enemark, et al., 1988
Ashby, M.T.; Enemark, J.H.; Lichtenberger, D.L.,
Destabilizing d -p orbital interactions and the alkylation reactions of iron(II)-thiolate complexes,
Inorg. Chem., 1988, 27, 191. [all data]
Carnovale, Kibel, et al., 1982
Carnovale, F.; Kibel, M.H.; Nyberg, G.L.; Peel, J.B.,
Photoelectron spectroscopic assignment of the p-states of benzenethiol,
J. Electron Spectrosc. Relat. Phenom., 1982, 25, 171. [all data]
Aloisi, Santini, et al., 1974
Aloisi, G.G.; Santini, S.; Sorriso, S.,
Molecular complexes of substituted diphenyl sulphides with π acceptors. Charge transfer spectra and ionization potentials of the donors,
J. Chem. Soc. Faraday Trans. 1, 1974, 70, 1908. [all data]
Henion and Kingston, 1973
Henion, J.D.; Kingston, D.G.I.,
Mass spectrometry of organic compounds. VII. Energetics of substituent isomerization in diphenyl sulfide and diphenyl ether,
J. Am. Chem. Soc., 1973, 95, 8358. [all data]
Frost, Herring, et al., 1972
Frost, D.C.; Herring, F.G.; Katrib, A.; McDowell, C.A.; McLean, R.A.N.,
Photoelectron spectra of CH3SH, (CH3)2S, C6H5SH, and C6H5CH2SH; the bonding between sulfur and carbon,
J. Phys. Chem., 1972, 76, 1030. [all data]
Matsunaga, 1961
Matsunaga, F.M.,
Photoionization yield of several molecules in the Schumann region,
Contribution No. 27, Hawaii Institute of, 1961, Geophysics, Honolulu. [all data]
Dewar, Ernstbrunner, et al., 1974
Dewar, P.S.; Ernstbrunner, E.; Gilmore, J.R.; Godfrey, M.; Mellor, J.M.,
Conformational analysis of alkyl aryl ethers and alkyl aryl sulphides by photoelectron spectroscopy,
Tetrahedron, 1974, 30, 2455. [all data]
Gal'perin, Bogolyubov, et al., 1969
Gal'perin, Ya.V.; Bogolyubov, G.M.; Grishin, N.N.; Petrov, A.A.,
Organic derivatives of elements of groups V and VI. VI. Mass spectra of compounds with S-S bonds,
Zh. Obshch. Khim., 1969, 39, 1599, In original 1567. [all data]
Bogolyubov, Plotnikov, et al., 1969
Bogolyubov, G.M.; Plotnikov, V.F.; Boiko, Yu.A.; Petrov, A.A.,
Organic derivatives of elements of groups V and VI. IX. Mass spectra of vinylacetylene sulfides,
Zh. Obshch. Khim., 1969, 39, 2467, In original 2407. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy 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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