Oxygen monofluoride
- Formula: FO
- Molecular weight: 34.9978
- IUPAC Standard InChIKey: FXOFAYKVTOLJTJ-UHFFFAOYSA-N
- CAS Registry Number: 12061-70-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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Gas phase 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.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 25.999 | kcal/mol | Review | Chase, 1998 | Data last reviewed in September, 1995 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 51.793 | cal/mol*K | Review | Chase, 1998 | Data 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 | 4.968710 | 8.835560 |
B | 9.557771 | 0.229981 |
C | -8.707802 | -0.025288 |
D | 2.915400 | 0.002818 |
E | 0.017491 | -0.293703 |
F | 24.22359 | 22.54330 |
G | 55.41439 | 61.21611 |
H | 26.00000 | 26.00000 |
Reference | Chase, 1998 | Chase, 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) | 12.77 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 121.6 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 115.2 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
2.2720 ± 0.0060 | LPES | Gilles, Polak, et al., 1992 | B |
2.050 ± 0.080 | EIAE | Alekseev, Volkov, et al., 1984 | From F2O; B |
>1.40 ± 0.50 | EIAE | Thynne and MacNeil, 1970 | From CF3OF; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
12.78 ± 0.03 | PI | Zhang, Kuo, et al., 1994 | LL |
12.77 | PE | Dyke, Jonathan, et al., 1980 | LLK |
12.8 ± 0.1 | DER | Berkowitz, Dehmer, et al., 1973 | LLK |
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
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity IE (evaluated) Recommended ionization energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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