Benzyl alcohol

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Gas 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas-22.6 ± 0.72kcal/molCcrPapina, Pimenova, et al., 1995ALS
Δfgas-24.07kcal/molN/AParks, Manchester, et al., 1954Value computed using ΔfHliquid° value of -161.0±1.3 kj/mol from Parks, Manchester, et al., 1954 and ΔvapH° value of 60.3 kj/mol from Papina, Pimenova, et al., 1995.; DRB
Δfgas-27.17kcal/molN/ALandrieu, Baylocq, et al., 1929Value computed using ΔfHliquid° value of -174.0 kj/mol from Landrieu, Baylocq, et al., 1929 and ΔvapH° value of 60.3 kj/mol from Papina, Pimenova, et al., 1995.; DRB
Δfgas-25.50kcal/molN/ASchmidlin, 1906Value computed using ΔfHliquid° value of -167.0 kj/mol from Schmidlin, 1906 and ΔvapH° value of 60.3 kj/mol from Papina, Pimenova, et al., 1995.; DRB

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
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)186.0kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity178.8kcal/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
Δr370.0 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr363.4 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

Ion clustering 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

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

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

Quantity Value Units Method Reference Comment
Δr19.2 ± 1.0kcal/molTDAsMeot-ner, 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr29.8cal/mol*KPHPMSMeot-ner, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr10.3 ± 1.0kcal/molTDAsMeot-ner, 1988gas phase; B

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

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

Quantity Value Units Method Reference Comment
Δr29.8 ± 2.5kcal/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
Δr23.8kcal/molPHPMSCaldwell and Kebarle, 1986gas phase; M
Quantity Value Units Method Reference Comment
Δr23.2cal/mol*KPHPMSCaldwell and Kebarle, 1986gas phase; M
Δr29.3cal/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
Δr20.7 ± 1.6kcal/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
Δr26.6 ± 2.9kcal/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
Δr29.3cal/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
Δr17.9 ± 2.0kcal/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

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

By formula: F- + C7H8O = (F- • C7H8O)

Quantity Value Units Method Reference Comment
Δr32.40kcal/molN/AMihalick, Gatev, et al., 1996gas phase; affinity derived using a ROH..F. neutral binding energy of 10.3 kcal/mol.; B

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Chemical Concepts
NIST MS number 151560

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References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Papina, Pimenova, et al., 1995
Papina, T.S.; Pimenova, S.M.; Luk'yanova, V.A.; Kolesov, V.P., Standard enthalpies of formation of benzyl alcohol and α,α,α-trichlorotoluene, Russ. J. Phys. Chem. (Engl. Transl.), 1995, 69, 1951-1953, In original 2148. [all data]

Parks, Manchester, et al., 1954
Parks, G.S.; Manchester, K.E.; Vaughan, L.M., Heats of combustion and formation of some alcohols, phenols, and ketones, J. Chem. Phys., 1954, 22, 2089-2090. [all data]

Landrieu, Baylocq, et al., 1929
Landrieu, P.; Baylocq, F.; Johnson, J.R., Etude thermochimique dans la serie furanique, Bull. Soc. Chim. France, 1929, 45, 36-49. [all data]

Schmidlin, 1906
Schmidlin, M.J., Recherches chimiques et thermochimiques sur la constitution des rosanilines, Ann. Chim. Phys., 1906, 1, 195-256. [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]

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]

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]

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]


Notes

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), References