potassium tetrafluoroborate
- Formula: BF4K
- Molecular weight: 125.903
- IUPAC Standard InChI: InChI=1S/BF4.K/c2-1(3,4)5;/q-1;+1
- IUPAC Standard InChIKey: AKEBROIVCDHVSD-UHFFFAOYSA-N
- CAS Registry Number: 14075-53-7
- Chemical structure:
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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 | -1552.26 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 315.39 | J/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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1500. - 6000. |
|---|---|
| A | 131.5370 |
| B | 0.831440 |
| C | -0.167755 |
| D | 0.011591 |
| E | -7.939099 |
| F | -1612.982 |
| G | 442.8806 |
| H | -1552.264 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1969 |
Condensed 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°liquid | -1869.42 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 150.13 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -1886.98 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1969 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 133.89 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1969 |
Liquid 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) | 843. - 1500. |
|---|---|
| A | 167.1173 |
| B | 2.338556×10-8 |
| C | -2.266796×10-8 |
| D | 7.154012×10-9 |
| E | 2.722922×10-10 |
| F | -1919.243 |
| G | 352.3681 |
| H | -1869.415 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1969 |
Solid 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. - 556. | 556. - 843. |
|---|---|---|
| A | 76.10696 | 115.9600 |
| B | 113.1529 | 43.43159 |
| C | 84.93478 | 0.561899 |
| D | -51.21509 | -0.142067 |
| E | -0.138083 | -0.034282 |
| F | -1915.820 | -1909.343 |
| G | 188.1524 | 285.8777 |
| H | -1886.984 | -1886.984 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1969 | Data last reviewed in December, 1969 |
Gas phase ion energetics 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.
Data compiled by: Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| BF2+ | 16.3 | ? | EI | Schafer and Rabeneck, 1987 | |
| K+ | 11.8 | BF4 | EI | Schafer and Rabeneck, 1987 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, NIST Free Links, 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]
Schafer and Rabeneck, 1987
Schafer, H.; Rabeneck, H.,
Massenspektroskopische untersuchung der borfluorid-komplexe ABF4,
Z. Anorg. Allg. Chem., 1987, 545, 224. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, NIST Free Links, References
- Symbols used in this document:
AE Appearance energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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