Oxygen difluoride
- Formula: F2O
- Molecular weight: 53.9962
- IUPAC Standard InChI: InChI=1S/F2O/c1-3-2
- IUPAC Standard InChIKey: UJMWVICAENGCRF-UHFFFAOYSA-N
- CAS Registry Number: 7783-41-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Difluorine monoxide; Oxygen fluoride (OF2); Difluorine monooxide; Fluorine monoxide; Fluorine oxide; Oxydifluoride; OF2; Oxygen fluoride; UN 2190
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Phase change 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 127.9 | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 0.3 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 49.4 | K | N/A | Streng, 1971 | Uncertainty assigned by TRC = 0.25 K; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 77.0 to 128.5 | 5.25997 | 758.401 | 15.742 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Gas phase ion energetics data
Go To: Top, Phase change 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:
L - Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 13.11 ± 0.01 | eV | N/A | N/A | L |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 13.11 ± 0.01 | PI | Berkowitz, Dehmer, et al., 1973 | LLK |
| 13.11 | PE | Brundle, Robin, et al., 1972 | LLK |
| 13.13 | PE | Cornford, Frost, et al., 1971 | LLK |
| 13.26 | PE | Chadwick, Cornford, et al., 1972 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| OF+ | ≤14.438 | F | PI | Berkowitz, Dehmer, et al., 1973 | LLK |
| OF+ | 15.8 ± 0.2 | F | EI | Malone and McGee, 1965 | RDSH |
| OF+ | 15.8 ± 0.2 | F | EI | Dibeler, Reese, et al., 1957 | RDSH |
References
Go To: Top, Phase change 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.
Streng, 1971
Streng, A.G.,
Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature,
J. Chem. Eng. Data, 1971, 16, 357. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [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]
Brundle, Robin, et al., 1972
Brundle, C.R.; Robin, M.B.; Kuebler, N.A.; Basch, H.,
Perfluoro effect in photoelectron spectroscopy. I. Nonaromatic molecules,
J. Am. Chem. Soc., 1972, 94, 1451. [all data]
Cornford, Frost, et al., 1971
Cornford, A.B.; Frost, D.C.; Herring, F.G.; McDowell, C.A.,
Photoelectron spectra of F2O and Cl2O,
J. Chem. Phys., 1971, 55, 2820. [all data]
Chadwick, Cornford, et al., 1972
Chadwick, D.; Cornford, A.B.; Frost, D.C.; Herring, F.G.; Katrib, A.; McDowell, C.A.; McLean, R.A.N.,
Photoelectron spectra of some dihalocompounds
in Electron spectroscopy, ed. D.A. Shirley (North-Holland Publixhing Co, Amsterdam), 1972, 453. [all data]
Malone and McGee, 1965
Malone, T.J.; McGee, H.A., Jr.,
Mass spectrometric investigations of the synthesis, stability, and energetics of the low-temperature oxygen fluorides. I. Dioxygen difluoride,
J. Phys. Chem., 1965, 69, 4338. [all data]
Dibeler, Reese, et al., 1957
Dibeler, V.H.; Reese, R.M.; Franklin, J.L.,
Ionization and dissociation of oxygen difluoride by electron impact,
J. Chem. Phys., 1957, 27, 1296. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy Tboil Boiling point Tfus Fusion (melting) point - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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