Molybdenum tetrafluoride


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
Δfgas-226.50kcal/molReviewChase, 1998Data last reviewed in December, 1978
Quantity Value Units Method Reference Comment
gas,1 bar78.616cal/mol*KReviewChase, 1998Data 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 (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. - 1300.1300. - 6000.
A 19.1535030.28571
B 15.17760-3.770431
C -12.841601.057071
D 3.790431-0.078201
E -0.202455-2.787020
F -233.4590-241.3250
G 96.66790108.7030
H -226.5000-226.5000
ReferenceChase, 1998Chase, 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

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Individual Reactions

Fluorine anion + F4Mo = (Fluorine anion • F4Mo)

By formula: F- + F4Mo = (F- • F4Mo)

Quantity Value Units Method Reference Comment
Δr91.5 ± 3.3kcal/molTDEqBorshchevskii, Boltalina, et al., 1988gas phase; value altered from reference due to conversion from electron convention to ion convention
Δr91.8 ± 4.0kcal/molTDEqBorchevsky and Sidorov, 1985gas phase; Fluoride Affinity: MoF4 > UF4 by 7.1 kcal/mol; value altered from reference due to conversion from electron convention to ion convention

References

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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

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