Oxygen monofluoride

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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.

Quantity Value Units Method Reference Comment
Δfgas25.999kcal/molReviewChase, 1998Data last reviewed in September, 1995
Quantity Value Units Method Reference Comment
gas,1 bar51.793cal/mol*KReviewChase, 1998Data last reviewed in September, 1995

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 1000.1000. to 6000.
A 4.9687108.835560
B 9.5577710.229981
C -8.707802-0.025288
D 2.9154000.002818
E 0.017491-0.293703
F 24.2235922.54330
G 55.4143961.21611
H 26.0000026.00000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1995 Data last reviewed in September, 1995

Gas phase ion energetics data

Go To: Top, Gas phase 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
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess

View reactions leading to FO+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)12.77eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)121.6kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity115.2kcal/molN/AHunter and Lias, 1998HL

Electron affinity determinations

EA (eV) Method Reference Comment
2.2720 ± 0.0060LPESGilles, Polak, et al., 1992B
2.050 ± 0.080EIAEAlekseev, Volkov, et al., 1984From F2O; B
>1.40 ± 0.50EIAEThynne and MacNeil, 1970From CF3OF; B

Ionization energy determinations

IE (eV) Method Reference Comment
12.78 ± 0.03PIZhang, Kuo, et al., 1994LL
12.77PEDyke, Jonathan, et al., 1980LLK
12.8 ± 0.1DERBerkowitz, Dehmer, et al., 1973LLK

References

Go To: Top, Gas phase 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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [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]

Gilles, Polak, et al., 1992
Gilles, M.K.; Polak, M.L.; Lineberger, W.C., Photoelectron Spectroscopy of the Halogen Oxide Anions FO-, ClO-, BrO-, IO-, OClO-, and OIO-, J. Chem. Phys., 1992, 96, 11, 8012, https://doi.org/10.1063/1.462352 . [all data]

Alekseev, Volkov, et al., 1984
Alekseev, V.I.; Volkov, V.M.; Fedorova, L.I.; Baluev, A.V., Mass Spectrometric Study of the Ionization of an Oxygen Difluoride Molecule, Izv. Akad. Nauk SSR Ser. Khim. 1302, 1984. [all data]

Thynne and MacNeil, 1970
Thynne, J.C.J.; MacNeil, K.A.G., Ionisation and dissociation of carbonyl fluoride and trifluoromethyl hypofluorite by electron impact, Intern. J. Mass Spectrom. Ion Phys., 1970, 5, 95. [all data]

Zhang, Kuo, et al., 1994
Zhang, Z.; Kuo, S.-C.; Klemm, R.B.; Monks, P.S.; Stief, L.J., A discharge flow-photoionization mass spectrometric study of the FO (X 2i) radical. Photoionization efficiency spectrum and ionization energy, Chem. Phys. Lett., 1994, 229, 377. [all data]

Dyke, Jonathan, et al., 1980
Dyke, J.M.; Jonathan, N.; Mills, J.D.; Morris, A., Vacuum ultraviolet photoelectron spectroscopy of transient species Part 12. TheFO(X2π1) radical, Mol. Phys., 1980, 40, 1177. [all data]

Berkowitz, Dehmer, et al., 1973
Berkowitz, J.; Dehmer, P.M.; Chupka, W.A., Photoionization mass spectrometry of F2O, J. Chem. Phys., 1973, 59, 925. [all data]


Notes

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