Benzyl alcohol
- Formula: C7H8O
- Molecular weight: 108.1378
- IUPAC Standard InChIKey: WVDDGKGOMKODPV-UHFFFAOYSA-N
- CAS Registry Number: 100-51-6
- 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: Benzenemethanol; α-Hydroxytoluene; α-Toluenol; (Hydroxymethyl)benzene; Benzenecarbinol; Phenylcarbinol; Phenylmethanol; Phenylmethyl alcohol; Methanol, phenyl-; NCI-C06111; Hydroxytoluene; Bentalol; Benzoyl alcohol; Benzenmethanol; Benzylic alcohol; Methanol benzene; NSC 8044; Benzyl Alkohol
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Gas phase ion energetics data
Go To: Top, 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
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
LL - Sharon G. Lias and Joel F. Liebman
View reactions leading to C7H8O+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 186.0 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 178.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.26 ± 0.05 | EI | Selim, Rabbih, et al., 1987 | LBLHLM |
8.37 | EI | Russell, Freiser, et al., 1983 | LBLHLM |
9.0 ± 0.1 | EI | Gilbert, Leach, et al., 1973 | LLK |
9.14 ± 0.05 | EI | Pignataro, Foffani, et al., 1966 | RDSH |
9.23 | PE | Ballard, Jones, et al., 1987 | Vertical value; LBLHLM |
9.53 | PE | Deshmukh, Dutta, et al., 1982 | Vertical value; LBLHLM |
9.23 | PE | Eck, Schweig, et al., 1978 | Vertical value; LLK |
9.11 | PE | Benoit and Harrison, 1977 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H3+ | 15.49 ± 0.09 | OH+C2H4 | EI | Selim, Rabbih, et al., 1989 | LL |
C5H3+ | 16.86 ± 0.11 | H2O+H+C2H2 | EI | Selim, Rabbih, et al., 1989 | LL |
C6H7+ | 10.33 ± 0.06 | CHO | EI | Selim, Rabbih, et al., 1987, 2 | LBLHLM |
C6H7+ | 10.67 | CO+H | EI | Russell, Freiser, et al., 1983 | LBLHLM |
C6H7+ | 10.9 | CHO? | EI | Harrison, Haynes, et al., 1965 | RDSH |
C7H6+ | 11.71 ± 0.06 | H2O | EI | Selim, Rabbih, et al., 1987, 3 | LBLHLM |
C7H7+ | 11.76 ± 0.07 | OH | EI | Selim, Rabbih, et al., 1987, 2 | LBLHLM |
C7H7+ | 11.7 | OH | EI | Meyerson, Rylander, et al., 1959 | RDSH |
C7H7O+ | 10.46 ± 0.06 | H | EI | Selim, Rabbih, et al., 1987 | LBLHLM |
C7H7O+ | 10.03 | H | EI | Russell, Freiser, et al., 1983 | LBLHLM |
De-protonation reactions
C7H7O- + =
By formula: C7H7O- + H+ = C7H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 370.0 ± 2.1 | kcal/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° | 363.4 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
References
Go To: Top, 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.
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]
Selim, Rabbih, et al., 1987
Selim, E.T.; Rabbih, M.A.; Fahmey, M.A.,
M and [M-1]+ ions formed for benzyl alcohol, benzyl amine and benzyl cyanide,
Org. Mass Spectrom., 1987, 22, 381. [all data]
Russell, Freiser, et al., 1983
Russell, D.H.; Freiser, B.S.; McBay, E.H.; Canada, D.C.,
The structure of decomposing [C7H7O]+ ions: Benzyl versus tropylium ion structures,
Org. Mass Spectrom., 1983, 18, 474. [all data]
Gilbert, Leach, et al., 1973
Gilbert, J.R.; Leach, W.P.; Miller, J.R.,
Ionisation appearance potential measurements in arene chromium tricarbonyls,
J. Organomet. Chem., 1973, 49, 219. [all data]
Pignataro, Foffani, et al., 1966
Pignataro, S.; Foffani, A.; Innorta, G.; Distefano, G.,
Molecular structural effects on the ionization potentials for metasubstituted aromatic compounds and for compounds of the type X-CH2-R,
Z. Physik. Chem. (Frankfurt), 1966, 49, 291. [all data]
Ballard, Jones, et al., 1987
Ballard, R.E.; Jones, J.; Read, D.; Inchley, A.; Cranmer, M.,
He(I) photoelectron studies of liquids and gases,
Chem. Phys. Lett., 1987, 137, 125. [all data]
Deshmukh, Dutta, et al., 1982
Deshmukh, P.; Dutta, T.K.; Hwang, J.L.-S.; Housecroft, C.E.; Fehlner, T.P.,
Photoelectron spectroscopic measurements of the relative charge on carbyne fragments bound to polynuclear cobalt carbonyl clusters,
J. Am. Chem. Soc., 1982, 104, 1740. [all data]
Eck, Schweig, et al., 1978
Eck, V.; Schweig, A.; Vermeer, H.,
The ultraviolet photoelectron spectrum of o-benzoquinone methide,
Tetrahedron Lett., 1978, 27, 2433. [all data]
Benoit and Harrison, 1977
Benoit, F.M.; Harrison, A.G.,
Predictive value of proton affinity. Ionization energy correlations involving oxygenated molecules,
J. Am. Chem. Soc., 1977, 99, 3980. [all data]
Selim, Rabbih, et al., 1989
Selim, E.T.M.; Rabbih, M.A.; Fahmey Ahmad, M.A.; Shalbi, A.S.,
Energetic study of [C5H3]+ fragment ion produced from some benzyl derivatives,
Arab Gulf J. Sci. Res., 1989, 7, 53. [all data]
Selim, Rabbih, et al., 1987, 2
Selim, E.T.M.; Rabbih, M.A.; Fahmey, M.A.,
A mass spectrometric study of [C7H7]+ and [C6H7]+ fragment ions obtained from benzyl alcohol, benzyl amine and benzyl cyanide,
Egypt. J. Phys., 1987, 18, 37. [all data]
Harrison, Haynes, et al., 1965
Harrison, A.G.; Haynes, P.; McLean, S.; Meyer, F.,
The mass spectra of methyl-substituted cyclopentadienes,
J. Am. Chem. Soc., 1965, 87, 5099. [all data]
Selim, Rabbih, et al., 1987, 3
Selim, E.T.; Rabbih, M.A.; Rezk, A.M.H.; Fahmey, M.A.,
Energetics of [C7H6]+ fragment ion using electron impact technique,
Indian J. Pure Appl. Phys., 1987, 25, 451. [all data]
Meyerson, Rylander, et al., 1959
Meyerson, S.; Rylander, P.N.; Eliel, E.L.; McCollum, J.D.,
Organic ions in the gas phase. VII. Tropylium ion from benzyl chloride and benzyl alcohol,
J. Am. Chem. Soc., 1959, 81, 2606. [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, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance 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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