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, Condensed phase thermochemistry data, Reaction thermochemistry 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 | -196.20 | kcal/mol | Review | Chase, 1998 | Data last reviewed in September, 1965 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 72.684 | cal/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 (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 6000. |
---|---|
A | 18.91800 |
B | 0.802529 |
C | -0.215715 |
D | 0.018316 |
E | -0.321007 |
F | -202.9500 |
G | 93.54171 |
H | -196.2000 |
Reference | Chase, 1998 |
Comment | Data last reviewed in September, 1965 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry 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°solid | -249.001 | kcal/mol | Review | Chase, 1998 | Data last reviewed in September, 1965 |
Quantity | Value | Units | Method | Reference | Comment |
S°solid | 23.49 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1965 |
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 (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 367. | 367. to 450. | 450. to 2000. |
---|---|---|---|
A | -7121.056 | 3700.454 | 20.71224 |
B | 46051.63 | -18458.63 | 4.085947 |
C | -110935.5 | 34513.15 | -0.667784 |
D | 94810.95 | -22814.01 | 0.139335 |
E | 67.65870 | -56.94694 | 0.070077 |
F | 846.9885 | -982.7055 | -254.9904 |
G | -17850.74 | 8352.294 | 48.11448 |
H | -249.0010 | -249.0010 | -249.0010 |
Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in September, 1965 | Data last reviewed in September, 1965 | Data last reviewed in September, 1965 |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed 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 by: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: F- + F3Fe = (F- • F3Fe)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 108.3 ± 3.6 | kcal/mol | TDAs | Boltalina, Borshchevskii, et al., 1992 | gas phase; Critical review; value altered from reference due to conversion from electron convention to ion convention |
ΔrH° | 104.9 ± 3.4 | kcal/mol | TDEq | Sorokin, Sidorov, et al., 1981 | gas phase; Fluoride Affinity: 14.9 kcal < AlF3; value altered from reference due to conversion from electron convention to ion convention |
ΔrH° | 109.0 ± 3.3 | kcal/mol | TDEq | Chilingarov, Korobov, et al., 1984 | gas phase; Fluoride Affinity: 8.8 kcal < AlF3; value altered from reference due to conversion from electron convention to ion convention |
By formula: F4Fe- + F3Fe = F7Fe2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 45.1 ± 5.7 | kcal/mol | TDAs | Sidirov, Borshchevsky, et al., 1986 | gas phase; value altered from reference due to conversion from electron convention to ion convention |
ΔrH° | 48.7 ± 1.0 | kcal/mol | TDAs | Sorokin, Sidorov, et al., 1981 | gas phase; ΔHf(A-) at 0 K; value altered from reference due to conversion from electron convention to ion convention |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry 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]
Boltalina, Borshchevskii, et al., 1992
Boltalina, O.V.; Borshchevskii, A.Y.; Sidorov, L.N.,
Thermochemistry of 3d Elements Fluorides and Their Negative Ions in Gas Phase,
Russ. J. Phys. Chem., 1992, 66, 1223. [all data]
Sorokin, Sidorov, et al., 1981
Sorokin, I.D.; Sidorov, L.N.; Nikitin, M.I.; Skokan, E.V.,
Mass-spectrometric determination of the enthalpies of dissociation of gaseous complex fluorides into neutral and charged particles. V. Heats of formation of FeF3- and FeF4-,
Int. J. Mass Spectrom. Ion Phys., 1981, 41, 45. [all data]
Chilingarov, Korobov, et al., 1984
Chilingarov, N.S.; Korobov, M.V.; Sidirov, L.N.; Mitkin, V.N.; Shipachev, V.A.; Zemskov, S.V.,
Electron affinity of rhodium tetrafluoride,
J. Chem. Thermodyn., 1984, 16, 965. [all data]
Sidirov, Borshchevsky, et al., 1986
Sidirov, L.N.; Borshchevsky, A.Ya.; Boltalina, O.V.; Sorokin, I.D.; Skokan, E.V.,
Electron affinities of gaseous iron fluorides and dimers,
Int. J. Mass Spectrom. Ion Processes, 1986, 73, 1. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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