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vanadium dioxide


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-232.63kJ/molReviewChase, 1998Data last reviewed in December, 1973
Quantity Value Units Method Reference Comment
gas,1 bar265.26J/mol*KReviewChase, 1998Data last reviewed in December, 1973

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. - 1100.1100. - 6000.
A 30.2581957.91995
B 65.903860.157601
C -59.59146-0.031969
D 19.212130.002217
E -0.108944-2.362843
F -244.4590-256.5512
G 284.0990325.3428
H -232.6304-232.6304
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1973 Data last reviewed in December, 1973

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

Electron affinity determinations

EA (eV) Method Reference Comment
1.83570 ± 0.00050N/AKim, Weichman, et al., 2014B
2.030 ± 0.010LPESWu and Wang, 199814KIM/WEi: this energy is an incorrect assignment; B
2.31 ± 0.21R-ARudnyi, Kaibicheva, et al., 1993value altered from reference due to conversion from electron convention to ion convention; B

Ionization energy determinations

IE (eV) Method Reference Comment
12.7 ± 0.2EIBennett, Lin, et al., 1974LLK
10. ± 2.EIFarber, Uy, et al., 1972LLK

References

Go To: Top, Gas 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]

Kim, Weichman, et al., 2014
Kim, J.B.; Weichman, M.L.; Neumark, D.M., Vibronic structure of VO2 probed by slow photoelectron velocity-map imaging spectroscopy, J. Chem. Phys., 2014, 140, 3, 034307, https://doi.org/10.1063/1.4861667 . [all data]

Wu and Wang, 1998
Wu, H.; Wang, L.-S., A Photoelectron Spectroscopic Study of Monovanadium Oxide Anions (VOx-, x=1-4), J. Phys. Chem., 1998, 108, 13, 5310, https://doi.org/10.1063/1.475966 . [all data]

Rudnyi, Kaibicheva, et al., 1993
Rudnyi, E.B.; Kaibicheva, E.A.; Sidorov, L.N., Negative Ions VO2(-), VO3(-), V2O5(-), V3O8(-), and V4O10(-) in the Vapors of Vanadium Oxides - Determining Enthalpies of Formation from Equ, J. Chem. Thermodyn., 1993, 25, 8, 929, https://doi.org/10.1006/jcht.1993.1090 . [all data]

Bennett, Lin, et al., 1974
Bennett, S.L.; Lin, S.-S.; Gilles, P.W., High-temperature vaporization of ternary systems. I. Mass spectrometry of oxygen-rich vanadium-tungsten-oxygen species, J. Phys. Chem., 1974, 78, 266. [all data]

Farber, Uy, et al., 1972
Farber, M.; Uy, O.M.; Srivastava, R.D., Effusion-mass spectrometric determination of the heats of formation of the gaseous molecules V4O10, V4O8, VO2, and VO, J. Chem. Phys., 1972, 56, 5312. [all data]


Notes

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