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Tungsten tetrafluoride oxide


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
Deltafgas-1336.62kJ/molReviewChase, 1998Data last reviewed in December, 1971
Quantity Value Units Method Reference Comment
gas,1 bar334.70J/mol*KReviewChase, 1998Data last reviewed in December, 1971

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) 1000. - 6000.
A 132.5152
B 0.299131
C -0.062317
D 0.004413
E -5.016868
F -1391.084
G 471.7167
H -1336.621
ReferenceChase, 1998
Comment Data last reviewed in December, 1971

Condensed 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
Deltafliquid-1405.26kJ/molReviewChase, 1998Data last reviewed in December, 1971
Quantity Value Units Method Reference Comment
liquid,1 bar178.91J/mol*KReviewChase, 1998Data last reviewed in December, 1971
Quantity Value Units Method Reference Comment
Deltafsolid-1406.91kJ/molReviewChase, 1998Data last reviewed in December, 1971
Quantity Value Units Method Reference Comment
solid175.76J/mol*KReviewChase, 1998Data last reviewed in December, 1971

Liquid 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) 379. - 1000.
A 182.0040
B 1.497086×10-8
C -1.750122×10-8
D 6.880045×10-9
E 1.273183×10-10
F -1459.521
G 399.1687
H -1405.255
ReferenceChase, 1998
Comment Data last reviewed in December, 1971

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 (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. - 379.
A -33.76003
B 637.2274
C -614.9852
D 207.1595
E 2.358585
F -1412.221
G -16.31446
H -1406.908
ReferenceChase, 1998
Comment Data last reviewed in December, 1971

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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
13.6PEVovna, Dudin, et al., 1981LLK
14.24PEVovna, Dudin, et al., 1981Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
F3OW+16.6 ± 0.5FEIMalkerova, Mel'nichenko, et al., 1981LLK
WOF3+14.6 ± 0.5FEIZmbov, Uy, et al., 1969RDSH
WF3+22.8 ± 1.0?EIZmbov, Uy, et al., 1969RDSH

References

Go To: Top, Gas phase thermochemistry data, Condensed 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]

Vovna, Dudin, et al., 1981
Vovna, V.I.; Dudin, A.S.; Kleshchevnikov, A.M.; Lopatin, S.N.; Rakov, E.G., Photoelectron spectra and electronic structure of molybdenum, tungsten, rhonium, and osmium oxotetrafluorides, Koord. Khim., 1981, 7, 575. [all data]

Malkerova, Mel'nichenko, et al., 1981
Malkerova, I.P.; Mel'nichenko, E.I.; Alikhanvan, E.G.; Gorgoraki, V.I., Thermal decomposition of the tungsten oxide fluorides W2O4FO2(NOF) and W2O4F, Russ. J. Inorg. Chem., 1981, 26, 17. [all data]

Zmbov, Uy, et al., 1969
Zmbov, K.F.; Uy, O.M.; Margrave, J.L., Mass spectrometric studies at high temperatures. XXXI. Stabilities of tungsten and molybdenum oxyfluorides, J. Phys. Chem., 1969, 73, 3008. [all data]


Notes

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