Tungsten oxide
- Formula: OW
- Molecular weight: 199.84
- IUPAC Standard InChI: InChI=1S/O.W
- IUPAC Standard InChIKey: VVRQVWSVLMGPRN-UHFFFAOYSA-N
- CAS Registry Number: 12035-99-3
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Constants of diatomic molecules, References, Notes
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 |
|---|---|---|---|---|---|
| ΔfH°gas | 425.09 | kJ/mol | Review | Chase, 1998 | Data last reviewed in September, 1966 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 248.20 | J/mol*K | Review | Chase, 1998 | Data 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) | 298. to 1200. | 1200. to 6000. |
|---|---|---|
| A | 22.55984 | 44.21651 |
| B | 32.66323 | -6.917533 |
| C | -27.27533 | 2.375437 |
| D | 8.156542 | -0.191794 |
| E | 0.034861 | -3.475499 |
| F | 417.2573 | 404.0928 |
| G | 267.0948 | 292.8854 |
| H | 425.0944 | 425.0944 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in September, 1966 | Data last reviewed in September, 1966 |
Constants of diatomic molecules
Go To: Top, Gas phase thermochemistry data, 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: Klaus P. Huber and Gerhard H. Herzberg
Data collected through July, 1975
| Symbol | Meaning |
|---|---|
| State | electronic state and / or symmetry symbol |
| Te | minimum electronic energy (cm-1) |
| ωe | vibrational constant – first term (cm-1) |
| ωexe | vibrational constant – second term (cm-1) |
| ωeye | vibrational constant – third term (cm-1) |
| Be | rotational constant in equilibrium position (cm-1) |
| αe | rotational constant – first term (cm-1) |
| γe | rotation-vibration interaction constant (cm-1) |
| De | centrifugal distortion constant (cm-1) |
| βe | rotational constant – first term, centrifugal force (cm-1) |
| re | internuclear distance (Å) |
| Trans. | observed transition(s) corresponding to electronic state |
| ν00 | position of 0-0 band (units noted in table) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R shaded bands in gas phase emission from 12900 to 24400 cm-1. | ||||||||||||
| ↳Gatterer and Krishnamurty, 1952; Vittalachar and Krishnamurthy, 1954; Gatterer, Junkes, et al., 1957; Foster and Gaydon, 1979 | ||||||||||||
| The following states were observed in rare gas matrices Weltner and McLeod, 1965. Frequencies are for solid neon, except for D → X which was also identified Gatterer and Krishnamurty, 1952 in the gas phase spectrum. | ||||||||||||
| G | [933] | G ← X | 23794 | |||||||||
| ↳Weltner and McLeod, 1965 | ||||||||||||
| F | [982] 1 | 2 | F ← X | 23366 | ||||||||
| ↳Weltner and McLeod, 1965 | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| E | [944] 1 | 2 | E ← X | 21509 | ||||||||
| ↳Weltner and McLeod, 1965 | ||||||||||||
| D | 20834.2 | 933.0 H | 6.5 | D ↔ X R | 20799.9 H | |||||||
| ↳Gatterer and Krishnamurty, 1952; Weltner and McLeod, 1965 | ||||||||||||
| C | [931] | 2 | C ← X | 19190 | ||||||||
| ↳Weltner and McLeod, 1965 | ||||||||||||
| B | [955] 3 | 2 | B ← X | 17283 | ||||||||
| ↳Weltner and McLeod, 1965 | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| A | [951] 4 | 2 | A ← X | 17132 4 | ||||||||
| ↳Weltner and McLeod, 1965 | ||||||||||||
| X | 0 | 1059.9 H | 3.1 | |||||||||
Notes
| 1 | Strong interaction between levels of E and F. |
| 2 | Higher ΔG and deperturbed values may be found in Weltner and McLeod, 1965. |
| 3 | Strong interaction between levels of A and B. |
| 4 | Lowest observed level (v=37) and ΔG. Weak system; the intensities of the bands derive mostly from the strong A~B interaction. |
| 5 | Thermochemical value (mass-spectrometry) DeMaria, Burns, et al., 1960. |
References
Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, 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]
Gatterer and Krishnamurty, 1952
Gatterer, A.; Krishnamurty, S.G.,
Two band systems of tungsten oxide,
Nature (London), 1952, 169, 543. [all data]
Vittalachar and Krishnamurthy, 1954
Vittalachar, V.; Krishnamurthy, S.G.,
Band spectrum of tungsten oxide,
Curr. Sci., 1954, 23, 357. [all data]
Gatterer, Junkes, et al., 1957
Gatterer, A.; Junkes, J.; Salpeter, E.W.,
Molecular spectra of metallic oxides, Specola Vaticana, Citta del Vaticano, 1957, 0. [all data]
Foster and Gaydon, 1979
Foster; Gaydon,
Quoted in Pearse and Gaydon, 1963 cited in Huber and Herzberg, 1979, 1979, 661. [all data]
Weltner and McLeod, 1965
Weltner, W., Jr.; McLeod, D., Jr.,
Spectroscopy of tungsten oxide molecules in neon and argon matrices at 4° and 20°K,
J. Mol. Spectrosc., 1965, 17, 2, 276, https://doi.org/10.1016/0022-2852(65)90167-0
. [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]
Pearse and Gaydon, 1963
Pearse, R.W.B.; Gaydon, A.G.,
The identification of molecular spectra, Third Edition, Pub. John Wiley & Sons, Inc., New York, 1963, 0. [all data]
Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G.,
Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Company, New York, 1979, 716. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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