Benzyl alcohol

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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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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Individual Reactions

C7H7O- + Benzyl alcohol = (C7H7O- • Benzyl alcohol)

By formula: C7H7O- + C7H8O = (C7H7O- • C7H8O)

Quantity Value Units Method Reference Comment
Δr125. ± 10.kJ/molN/ACaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Δr99.6kJ/molPHPMSCaldwell and Kebarle, 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr97.1J/mol*KPHPMSCaldwell and Kebarle, 1986gas phase; M
Δr123.J/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Δr86.6 ± 6.7kJ/molTDAsCaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

C8H5- + Benzyl alcohol = (C8H5- • Benzyl alcohol)

By formula: C8H5- + C7H8O = (C8H5- • C7H8O)

Quantity Value Units Method Reference Comment
Δr111. ± 12.kJ/molN/ACaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Quantity Value Units Method Reference Comment
Δr123.J/mol*KN/ACaldwell, Rozeboom, et al., 1984gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity Value Units Method Reference Comment
Δr74.9 ± 8.4kJ/molIMRECaldwell, Rozeboom, et al., 1984gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

C7H7O- + Hydrogen cation = Benzyl alcohol

By formula: C7H7O- + H+ = C7H8O

Quantity Value Units Method Reference Comment
Δr1548. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1520. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

cyclopentadienide anion + Benzyl alcohol = (cyclopentadienide anion • Benzyl alcohol)

By formula: C5H5- + C7H8O = (C5H5- • C7H8O)

Quantity Value Units Method Reference Comment
Δr80.3 ± 4.2kJ/molTDAsMeot-ner, 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr125.J/mol*KPHPMSMeot-ner, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr43.1 ± 4.2kJ/molTDAsMeot-ner, 1988gas phase; B

Fluorine anion + Benzyl alcohol = (Fluorine anion • Benzyl alcohol)

By formula: F- + C7H8O = (F- • C7H8O)

Quantity Value Units Method Reference Comment
Δr135.6kJ/molN/AMihalick, Gatev, et al., 1996gas phase; affinity derived using a ROH..F. neutral binding energy of 10.3 kcal/mol.; B

Benzene, (iodomethyl)- + Water = Hydrogen iodide + Benzyl alcohol

By formula: C7H7I + H2O = HI + C7H8O

Quantity Value Units Method Reference Comment
Δr-12.6kJ/molCmGellner and Skinner, 1949liquid phase; Heat of hydrolysis; ALS

Benzene, (bromomethyl)- + Water = Hydrogen bromide + Benzyl alcohol

By formula: C7H7Br + H2O = HBr + C7H8O

Quantity Value Units Method Reference Comment
Δr-7.9kJ/molCmGellner and Skinner, 1949liquid phase; Heat of hydrloysis; ALS

Benzyl alcohol = Benzaldehyde + Hydrogen

By formula: C7H8O = C7H6O + H2

Quantity Value Units Method Reference Comment
Δr53.93kJ/molEqkCubberley and Mueller, 1946gas phase; 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:
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)778.3kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity748.0kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.26 ± 0.05EISelim, Rabbih, et al., 1987LBLHLM
8.37EIRussell, Freiser, et al., 1983LBLHLM
9.0 ± 0.1EIGilbert, Leach, et al., 1973LLK
9.14 ± 0.05EIPignataro, Foffani, et al., 1966RDSH
9.23PEBallard, Jones, et al., 1987Vertical value; LBLHLM
9.53PEDeshmukh, Dutta, et al., 1982Vertical value; LBLHLM
9.23PEEck, Schweig, et al., 1978Vertical value; LLK
9.11PEBenoit and Harrison, 1977Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H3+15.49 ± 0.09OH+C2H4EISelim, Rabbih, et al., 1989LL
C5H3+16.86 ± 0.11H2O+H+C2H2EISelim, Rabbih, et al., 1989LL
C6H7+10.33 ± 0.06CHOEISelim, Rabbih, et al., 1987, 2LBLHLM
C6H7+10.67CO+HEIRussell, Freiser, et al., 1983LBLHLM
C6H7+10.9CHO?EIHarrison, Haynes, et al., 1965RDSH
C7H6+11.71 ± 0.06H2OEISelim, Rabbih, et al., 1987, 3LBLHLM
C7H7+11.76 ± 0.07OHEISelim, Rabbih, et al., 1987, 2LBLHLM
C7H7+11.7OHEIMeyerson, Rylander, et al., 1959RDSH
C7H7O+10.46 ± 0.06HEISelim, Rabbih, et al., 1987LBLHLM
C7H7O+10.03HEIRussell, Freiser, et al., 1983LBLHLM

De-protonation reactions

C7H7O- + Hydrogen cation = Benzyl alcohol

By formula: C7H7O- + H+ = C7H8O

Quantity Value Units Method Reference Comment
Δr1548. ± 8.8kJ/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr1520. ± 8.4kJ/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; 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.

Caldwell, Rozeboom, et al., 1984
Caldwell, G.; Rozeboom, M.D.; Kiplinger, J.P.; Bartmess, J.E., Anion-alcohol hydrogen bond strengths in the gas phase, J. Am. Chem. Soc., 1984, 106, 4660. [all data]

Paul and Kebarle, 1990
Paul, G.J.C.; Kebarle, P., Thermodynamics of the Association Reactions OH- - H2O = HOHOH- and CH3O- - CH3OH = CH3OHOCH3- in the Gas Phase, J. Phys. Chem., 1990, 94, 12, 5184, https://doi.org/10.1021/j100375a076 . [all data]

Meot-ner and Sieck, 1986
Meot-ner, M.; Sieck, L.W., Relative acidities of water and methanol, and the stabilities of the dimer adducts, J. Phys. Chem., 1986, 90, 6687. [all data]

Caldwell and Kebarle, 1986
Caldwell, G.; Kebarle, P., Mobility of Gaseous Ions in Weak Electric Fields in Unpublished results, 1986. [all data]

Meot-Ner(Mautner), 1986
Meot-Ner(Mautner), M., Comparative Stabilities of Cationic and Anionic Hydrogen-Bonded Networks. Mixed Clusters of Water-Methanol, J. Am. Chem. Soc., 1986, 108, 20, 6189, https://doi.org/10.1021/ja00280a014 . [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]

Meot-ner, 1988
Meot-ner, M., The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules, J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022 . [all data]

Mihalick, Gatev, et al., 1996
Mihalick, J.E.; Gatev, G.G.; Brauman, J.I., Electron Photodetachment Spectroscopy of Solvated Anions: RO.HF- or ROH.F-?, J. Am. Chem. Soc., 1996, 118, 49, 12424, https://doi.org/10.1021/ja954202k . [all data]

Gellner and Skinner, 1949
Gellner, O.H.; Skinner, H.A., Dissociation energies of carbon-halogen bonds. The bond strengths allyl-X and benzyl-X, J. Chem. Soc., 1949, 1145-1148. [all data]

Cubberley and Mueller, 1946
Cubberley, A.H.; Mueller, M.B., Equilibrium studies on the dehydrogenation of primary and secondary alcohols. I. 2-Butanol, 2-octanol, cyclopentanol and benzyl alcohol, J. Am. Chem. Soc., 1946, 68, 1149-1151. [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]

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]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References