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

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

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

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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess

View reactions leading to F4Mo+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
<2.28095TDEqBorshchevskii, Boltalina, et al., 1988B

Ionization energy determinations

IE (eV) Method Reference Comment
9.7 ± 0.2EIAlikhanyan, Steblevskii, et al., 1978LLK
10.11 ± 0.10EIHildenbrand, 1976LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
F2Mo+19.0 ± 1.0?EIAlikhanyan, Steblevskii, et al., 1978LLK
F3Mo+14.0 ± 0.5FEIAlikhanyan, Steblevskii, et al., 1978LLK

Ion clustering 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering 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

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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]

Alikhanyan, Steblevskii, et al., 1978
Alikhanyan, A.S.; Steblevskii, A.V.; Malkerova, I.P.; Pervov, V.S.; Butskii, V.D.; Gorgoraki, V.I., Mass spectrometric study of the sublimation of molybdenum trifluoride, Russ. J. Inorg. Chem., 1978, 23, 814. [all data]

Hildenbrand, 1976
Hildenbrand, D.L., Thermochemical studies of the gaseous lower valent fluorides of molybdenum, J. Chem. Phys., 1976, 65, 614. [all data]


Notes

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