Molybdenum tetrafluoride
- Formula: F4Mo
- Molecular weight: 171.95
- CAS Registry Number: 23412-45-5
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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 | -947.68 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1978 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 328.93 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1978 |
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 1300. | 1300. to 6000. |
|---|---|---|
| A | 80.13824 | 126.7154 |
| B | 63.50308 | -15.77548 |
| C | -53.72925 | 4.422781 |
| D | 15.85916 | -0.327195 |
| E | -0.847072 | -11.66089 |
| F | -976.7925 | -1009.704 |
| G | 404.4585 | 454.8134 |
| H | -947.6760 | -947.6760 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1978 | Data last reviewed in December, 1978 |
Reaction 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.
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
+ F4Mo = (
• F4Mo)
By formula: F- + F4Mo = (F- • F4Mo)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 383. ± 14. | kJ/mol | TDEq | Borshchevskii, Boltalina, et al., 1988 | gas phase; value altered from reference due to conversion from electron convention to ion convention |
| ΔrH° | 384. ± 17. | kJ/mol | TDEq | Borchevsky and Sidorov, 1985 | gas phase; Fluoride Affinity: MoF4 > UF4 by 7.1 kcal/mol; value altered from reference due to conversion from electron convention to ion convention |
References
Go To: Top, Gas 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]
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]
Borchevsky and Sidorov, 1985
Borchevsky, A.Ya.; Sidorov, L.N.,
Ion-Molecule, Ion-Ion, and Molecule-Molecule Equilibria in the System Mo-U-Fe-F-O-e-,
Dokl. Akad. Nauk SSSR Ser. Khim., 1985, 285, 377. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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