Phenol, 4-fluoro-

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Condensed 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
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δcsolid-696.66kcal/molCcbSwarts, 1919Not corrected for CODATA value of ΔfH; ALS

Constant pressure heat capacity of solid

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
34.56298.15Lichanot, 1991T = 183 to 354 K. Cp(c) = 123.033 + 0.579T + 9.573x10-3T2 + 7.243x10-5T3 (T in °C) J/mol*K (-90 to 34°C). Cp value calculated from equation.; DH

Reaction 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:
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. 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

Chlorine anion + Phenol, 4-fluoro- = (Chlorine anion • Phenol, 4-fluoro-)

By formula: Cl- + C6H5FO = (Cl- • C6H5FO)

Quantity Value Units Method Reference Comment
Δr27.9 ± 2.0kcal/molTDEqCummings, French, et al., 1977gas phase; Re-anchored to data in French, Ikuta, et al., 1982.; B,M
Δr28.6kcal/molPHPMSPaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr25.cal/mol*KN/APaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M
Δr25.3cal/mol*KN/ACummings, French, et al., 1977gas phase; switching reaction(Cl-)C6H5OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Quantity Value Units Method Reference Comment
Δr20.6 ± 2.0kcal/molTDEqCummings, French, et al., 1977gas phase; Re-anchored to data in French, Ikuta, et al., 1982.; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
18.0423.PHPMSPaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M
19.3300.PHPMSCummings, French, et al., 1977gas phase; switching reaction(Cl-)C6H5OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M

Iodide + Phenol, 4-fluoro- = (Iodide • Phenol, 4-fluoro-)

By formula: I- + C6H5FO = (I- • C6H5FO)

Quantity Value Units Method Reference Comment
Δr19.6 ± 1.8kcal/molIMREPaul and Kebarle, 1990gas phase; ΔGaff at 423 K; B,M
Quantity Value Units Method Reference Comment
Δr21.cal/mol*KN/APaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr10.7 ± 1.0kcal/molIMREPaul and Kebarle, 1990gas phase; ΔGaff at 423 K; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
10.5423.PHPMSPaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M

Bromine anion + Phenol, 4-fluoro- = (Bromine anion • Phenol, 4-fluoro-)

By formula: Br- + C6H5FO = (Br- • C6H5FO)

Quantity Value Units Method Reference Comment
Δr23.3 ± 1.8kcal/molIMREPaul and Kebarle, 1990gas phase; ΔGaff at 423 K; B,M
Quantity Value Units Method Reference Comment
Δr23.cal/mol*KN/APaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr13.6 ± 1.0kcal/molIMREPaul and Kebarle, 1990gas phase; ΔGaff at 423 K; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
13.6423.PHPMSPaul and Kebarle, 1990gas phase; Entropy change calculated or estimated; M

C6H4FO- + Hydrogen cation = Phenol, 4-fluoro-

By formula: C6H4FO- + H+ = C6H5FO

Quantity Value Units Method Reference Comment
Δr346.7 ± 2.1kcal/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr347.7 ± 2.3kcal/molG+TSKebarle and McMahon, 1977gas phase; B
Quantity Value Units Method Reference Comment
Δr339.9 ± 2.0kcal/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr340.8 ± 2.0kcal/molIMREKebarle and McMahon, 1977gas phase; B

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 compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

View reactions leading to C6H5FO+ (ion structure unspecified)

Proton affinity at 298K

Proton affinity (kcal/mol) Reference Comment
185.Bogdanov, van Duijn, et al., 2002MM

Gas basicity at 298K

Gas basicity (review) (kcal/mol) Reference Comment
179.Bogdanov, van Duijn, et al., 2002MM

Ionization energy determinations

IE (eV) Method Reference Comment
8.79 ± 0.02PEMaier, Marthaler, et al., 1980Vertical value; LLK
8.77PEPalmer, Moyes, et al., 1979Vertical value; LLK

De-protonation reactions

C6H4FO- + Hydrogen cation = Phenol, 4-fluoro-

By formula: C6H4FO- + H+ = C6H5FO

Quantity Value Units Method Reference Comment
Δr346.7 ± 2.1kcal/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr347.7 ± 2.3kcal/molG+TSKebarle and McMahon, 1977gas phase; B
Quantity Value Units Method Reference Comment
Δr339.9 ± 2.0kcal/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Δr340.8 ± 2.0kcal/molIMREKebarle and McMahon, 1977gas phase; B

References

Go To: Top, Condensed phase thermochemistry 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.

Swarts, 1919
Swarts, F., Etudes thermochimiques sur les combinaisons organiques fluorees, J. Chim. Phys., 1919, 17, 3-70. [all data]

Lichanot, 1991
Lichanot, A., Heat capacities of fluroaniline, fluorophenol and difluorobenzene in condensed phase, Thermochim. Acta, 1991, 177, 265-272. [all data]

Cummings, French, et al., 1977
Cummings, J.B.; French, M.A.; Kebarle, P., Effect of charge delocalization on hydrogen bonding to negative ions and solvation of negative ions. Substituted phenols and phenoxide ions, J. Am. Chem. Soc., 1977, 99, 6999. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Paul and Kebarle, 1990
Paul, G.J.C.; Kebarle, P., Stabilities in the Gas Phase of the Hydrogen Bonded Complexes, YC6H4OH-X-, of Substituted Phenols, YC6H4OH, with the Halide Anions X-(Cl-, Br-), Can. J. Chem., 1990, 68, 11, 2070, https://doi.org/10.1139/v90-316 . [all data]

Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W., Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities, J. Am. Chem. Soc., 1981, 103, 4017. [all data]

Kebarle and McMahon, 1977
Kebarle, P.; McMahon, T.B., Intrinsic Acidities of Substituted Phenols and Benzoic Acids Determined by Gas Phase Proton Transfer Equilibria, J. Am. Chem. Soc., 1977, 99, 7, 2222, https://doi.org/10.1021/ja00449a032 . [all data]

Bogdanov, van Duijn, et al., 2002
Bogdanov, B.; van Duijn, D.; Ingemann, S.; Hammerum, S., Protonation of fluorophenols and fluoroanisoles in the gas phase: experiment and theory, Phys. Chem. Chem. Phys., 2002, 4, 2904. [all data]

Maier, Marthaler, et al., 1980
Maier, J.P.; Marthaler, O.; Mohraz, M., Emission spectra of the cations of some fluorosubstituted phenols in the gaseous phase, J. Electron Spectrosc. Relat. Phenom., 1980, 19, 11. [all data]

Palmer, Moyes, et al., 1979
Palmer, M.H.; Moyes, W.; Speirs, M.; Ridyard, J.N.A., The electronic structure of substituted benzenes; ab initio calculations and photoelectron spectra for phenol, the methyl- and fluoro-derivatives, and the dihydroxybenzenes, J. Mol. Struct., 1979, 52, 293. [all data]


Notes

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