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tungsten trioxide


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-292.88kJ/molReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
gas,1 bar286.43J/mol*KReviewChase, 1998Data last reviewed in September, 1966

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) 3000. - 6000.
A 82.72479
B 0.235081
C -0.047714
D 0.003313
E -3.492612
F -327.4557
G 371.5271
H -292.8804
ReferenceChase, 1998
Comment Data last reviewed in September, 1966

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-788.91kJ/molReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
liquid,1 bar103.51J/mol*KReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
Deltafsolid-842.91kJ/molReviewChase, 1998Data last reviewed in September, 1966
Quantity Value Units Method Reference Comment
solid75.91J/mol*KReviewChase, 1998Data last reviewed in September, 1966

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) 1745. - 3000.
A 131.7960
B 0.000000
C 0.000000
D 0.000000
E 0.000000
F -855.9292
G 211.8573
H -788.9141
ReferenceChase, 1998
Comment Data last reviewed in September, 1966

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. - 1050.1050. - 1745.
A 30.5396068.31250
B 200.867035.12680
C -206.2480-10.35390
D 76.519302.016841
E -0.0889042.245240
F -859.5700-857.1110
G 60.96830156.3860
H -842.9090-842.9090
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1966 Data last reviewed in September, 1966

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

(CAS Reg. No. 27151-29-7 bullet 4294967295tungsten trioxide) + tungsten trioxide = CAS Reg. No. 27151-29-7

By formula: (CAS Reg. No. 27151-29-7 bullet 4294967295O3W) + O3W = CAS Reg. No. 27151-29-7

Quantity Value Units Method Reference Comment
Deltar703. ± 54.kJ/molTherJensen and Miller, 1970gas phase; H2WO4 + e- <=> HWO4- + H measured

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
B - John E. Bartmess

Electron affinity determinations

EA (eV) Method Reference Comment
3.33 ± 0.15LPDWalter, Hertzler, et al., 1991B
3.94 ± 0.20R-ARudnyi, Vovk, et al., 1989Multi-parameter fit to many IMRE, Ion-ion Eq. «DELTA»Hf(A-) at 0 K; value altered from reference due to conversion from electron convention to ion convention; B
4.16 ± 0.43R-AJensen and Miller, 1970HWO4- + H <=> WO3- + H2O; B
>2.50211IMRBCenter, 1972B

Ionization energy determinations

IE (eV) Method Reference Comment
12.5 ± 0.5EIBalducci, Gigli, et al., 1981LLK
11.9 ± 0.5EIYamdagni, Pupp, et al., 1970RDSH
12.0 ± 0.5EIPupp, Yamdagni, et al., 1969RDSH
12.1EINorman and Staley, 1965RDSH
11.9EIDrowart, Exsteen, et al., 1964RDSH
11.7 ± 0.6EIDeMaria, Burns, et al., 1960RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
WO2+14.2OEINorman and Staley, 1965RDSH

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, NIST Free Links, 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: Marilyn E. Jacox

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

e 3 WO stretch 924.3 Ne IR Zhou and Andrews, 1999
3 WO stretch 918.3 Ar IR Green and Ervin, 1981
Almond and Downs, 1988
Bare, Souter, et al., 1998
3 WO stretch 916 Kr IR Green and Ervin, 1981

Additional references: Jacox, 1998, page 250; Jacox, 2003, page 226


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, 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]

Jensen and Miller, 1970
Jensen, D.E.; Miller, W.J., Electron Attachment and Compound Formation in Flames. III. Negative Ion and Compound Formation in Flames Containing Tungsten and Potassium, J. Chem. Phys., 1970, 53, 8, 3287, https://doi.org/10.1063/1.1674479 . [all data]

Walter, Hertzler, et al., 1991
Walter, C.W.; Hertzler, C.F.; Devynck, P.; Smith, G.P.; Peterson, J.R., Photodetachment of WO3-, J. Chem. Phys., 1991, 95, 2, 824, https://doi.org/10.1063/1.461089 . [all data]

Rudnyi, Vovk, et al., 1989
Rudnyi, E.B.; Vovk, O.M.; Kaibicheva, E.A.; Sidorov, L.N., Formation Enthalpies of Oxygen Containing Anions of Group VI Elements in the Gas Phase and the Electron Affinities of CrO3, MoO3, and WO3, J. Chem. Thermodyn., 1989, 21, 3, 247, https://doi.org/10.1016/0021-9614(89)90014-1 . [all data]

Center, 1972
Center, R.E., Ion-molecule experiments involving negative ions of tungsten and rhenium oxides, J. Chem. Phys., 1972, 56, 371. [all data]

Balducci, Gigli, et al., 1981
Balducci, G.; Gigli, G.; Guido, M., Dissociation energies of the molecules CrPO2(g) and CoO(g) by high-temperature mass spectrometry, J. Chem. Soc. Faraday Trans. 2, 1981, 77, 1107. [all data]

Yamdagni, Pupp, et al., 1970
Yamdagni, R.; Pupp, C.; Porter, R.F., Mass spectrometric study of the evaporation of lithium and sodium molybdates and tungstates, J. Inorg. Nucl. Chem., 1970, 32, 3509. [all data]

Pupp, Yamdagni, et al., 1969
Pupp, C.; Yamdagni, R.; Porter, R.F., Mass spectrometric study of the evaporation of BaMoO4 and BaWO4, J. Inorg. Nucl. Chem., 1969, 31, 2021. [all data]

Norman and Staley, 1965
Norman, J.H.; Staley, H.G., Thermodynamics of the dimerization and trimerization of gaseous tungsten trioxide and molybdenum trioxide, J. Chem. Phys., 1965, 43, 3804. [all data]

Drowart, Exsteen, et al., 1964
Drowart, J.; Exsteen, G.; Verhaegen, G., Mass spectrometric determination of the dissociation energy of the molecules MgO, CaO, SrO and Sr2O, J. Chem. Soc. Faraday Trans., 1964, 60, 1920. [all data]

DeMaria, Burns, et al., 1960
DeMaria, G.; Burns, R.P.; Drowart, J.; Inghram, M.G., Mass spectrometric study of gaseous molybdenum, tungsten, and uranium oxides, J. Chem. Phys., 1960, 32, 1373. [all data]

Zhou and Andrews, 1999
Zhou, M.; Andrews, L., Infrared spectra and density functional calculations of the CrO[sub 2][sup -], MoO[sub 2][sup -], and WO[sub 2][sup -] molecular anions in solid neon, J. Chem. Phys., 1999, 111, 9, 4230, https://doi.org/10.1063/1.479721 . [all data]

Green and Ervin, 1981
Green, D.W.; Ervin, K.M., Infrared spectra of matrix-isolated tungsten oxides, J. MOl. Spectrosc., 1981, 89, 1, 145, https://doi.org/10.1016/0022-2852(81)90166-1 . [all data]

Almond and Downs, 1988
Almond, M.J.; Downs, A.J., J. Chem. Soc., 1988, Dalton Trans. 809. [all data]

Bare, Souter, et al., 1998
Bare, W.D.; Souter, P.F.; Andrews, L., Reactions of Laser-Ablated Molybdenum and Tungsten Atoms with Dioxygen. Resolved Infrared Spectra of Natural Molybdenum and Tungsten Isotopic Oxides in Argon Matrices, J. Phys. Chem. A, 1998, 102, 43, 8279, https://doi.org/10.1021/jp9826266 . [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]


Notes

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