Thionyl fluoride
- Formula: F2OS
- Molecular weight: 86.061
- IUPAC Standard InChI: InChI=1S/F2OS/c1-4(2)3
- IUPAC Standard InChIKey: LSJNBGSOIVSBBR-UHFFFAOYSA-N
- CAS Registry Number: 7783-42-8
- 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: Sulfur difluoride oxide; Sulfurous oxyfluoride; Thionyl difluoride; SOF2; Fluorure de thionyle; Sulfur difluoride monoxide; OSF2
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Gas phase thermochemistry 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -543.92 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1972 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 279.13 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1972 |
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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1000. | 1000. to 6000. |
|---|---|---|
| A | 37.57638 | 82.34740 |
| B | 107.8434 | 0.459746 |
| C | -100.1135 | -0.095348 |
| D | 33.68722 | 0.006730 |
| E | -0.411491 | -4.170608 |
| F | -560.4803 | -580.2371 |
| G | 294.2850 | 361.0068 |
| H | -543.9200 | -543.9200 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1972 | Data last reviewed in June, 1972 |
Phase change 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 compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 230. to 235. | K | N/A | PCR Inc., 1990 | BS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 23.7 | 188. | Dykyj, Svoboda, et al., 1999 | Based on data from 173. to 244. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 174.42 to 229.1 | 3.80303 | 676.1 | -50.852 | Pace and Turnbull, 1965 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Gas phase thermochemistry data, Phase change 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]
PCR Inc., 1990
PCR Inc.,
Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]
Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R.,
Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [all data]
Pace and Turnbull, 1965
Pace, E.L.; Turnbull, B.F.,
Thermodynamic Properties of Thionyl Fluoride from 13 ºK to its Boiling Point Entropy from Molecular and Spectroscopic Data,
J. Chem. Phys., 1965, 43, 6, 1953-1957, https://doi.org/10.1063/1.1697059
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) Tboil Boiling point ΔfH°gas Enthalpy of formation of gas at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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