Phosphorus pentafluoride
- Formula: F5P
- Molecular weight: 125.965778
- IUPAC Standard InChI: InChI=1S/F5P/c1-6(2,3,4)5
- IUPAC Standard InChIKey: OBCUTHMOOONNBS-UHFFFAOYSA-N
- CAS Registry Number: 7647-19-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Phosphorus(V) fluoride; PF5; Phosphorane, pentafluoro-; UN 2198; Phosphorus fluoride
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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 |
|---|---|---|---|---|---|
| ΔfH°gas | -381.073 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 71.893 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1969 |
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 1100. | 1100. to 6000. |
|---|---|---|
| A | 13.21000 | 31.62980 |
| B | 44.70930 | 0.092586 |
| C | -41.05719 | -0.018762 |
| D | 13.39820 | 0.001300 |
| E | -0.264909 | -1.697740 |
| F | -387.5521 | -395.4271 |
| G | 74.76439 | 102.6110 |
| H | -381.0729 | -381.0729 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1969 | Data last reviewed in December, 1969 |
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 | 188.3 | K | N/A | PCR Inc., 1990 | BS |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.11 | 184. | QM | Linke and Rohrmann, 1937 | Based on data from 179. to 189. K.; AC |
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]
Linke and Rohrmann, 1937
Linke, R.; Rohrmann, W.,
Z. Phys. Chem. Abt. B, 1937, 35, 256. [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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