iron trifluoride
- Formula: F3Fe
- Molecular weight: 112.840
- CAS Registry Number: 7783-50-8
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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 | -820.90 | kJ/mol | Review | Chase, 1998 | Data last reviewed in September, 1965 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 304.11 | J/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1965 |
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 6000. |
|---|---|
| A | 79.15291 |
| B | 3.357782 |
| C | -0.902552 |
| D | 0.076636 |
| E | -1.343094 |
| F | -849.1428 |
| G | 391.3785 |
| H | -820.9008 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1965 |
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 compiled as indicated in comments:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 3.62 ± 0.13 | R-A | Borshchevskii, Boltalina, et al., 1988 | Fluoride Affinity: FeF2 < FeF3 by 22.6±2.6 kcal/mol.; value altered from reference due to conversion from electron convention to ion convention; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 12.5 ± 0.3 | EI | Zmbov and Margrave, 1967 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| FeF+ | 16.0 ± 0.3 | ? | EI | Zmbov and Margrave, 1967 | RDSH |
| FeF2+ | 13.7 ± 0.3 | F | EI | Zmbov and Margrave, 1967 | RDSH |
| Fe+ | 20.5 ± 0.3 | ? | EI | Zmbov and Margrave, 1967 | RDSH |
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]
Borshchevskii, Boltalina, et al., 1988
Borshchevskii, A.Ya.; Boltalina, O.V.; Sorokin, I.D.; Sidorov, L.N.,
Thermochemical Quantities for Gas Phase Iron, Uranium, and Molybdenum Fluorides, and Their Negative Ions.,
J. Chem. Thermodyn., 1988, 20, 5, 523, https://doi.org/10.1016/0021-9614(88)90080-8
. [all data]
Zmbov and Margrave, 1967
Zmbov, K.F.; Margrave, J.L.,
Mass spectrometric studies at high temperatures. XV.Sublimation pressures of chromium, manganese and iron trifluoridcs and the heat of dissociation of Fe,F,(g),
J. Inorg. Nucl. Chem., 1967, 29, 673. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity 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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