tungsten dioxide
- Formula: O2W
- Molecular weight: 215.84
- CAS Registry Number: 12036-22-5
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, 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 | 76.57 | kJ/mol | Review | Chase, 1998 | Data last reviewed in September, 1966 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 285.50 | 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.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 298. - 1100. | 1100. - 6000. |
|---|---|---|
| A | 29.81594 | 58.09735 |
| B | 66.73522 | 0.252121 |
| C | -60.20860 | -0.174854 |
| D | 19.38100 | 0.034110 |
| E | -0.095578 | -2.617933 |
| F | 64.88296 | 52.14896 |
| G | 303.6475 | 345.3043 |
| H | 76.56720 | 76.56720 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in September, 1966 | Data last reviewed in September, 1966 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, 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°solid | -589.69 | kJ/mol | Review | Chase, 1998 | Data last reviewed in September, 1966 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 50.50 | J/mol*K | Review | Chase, 1998 | 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.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 298. - 1300. | 1300. - 3000. |
|---|---|---|
| A | 53.40876 | -183.2441 |
| B | 53.53219 | 263.9296 |
| C | -39.01170 | -87.96023 |
| D | 11.12019 | 10.73338 |
| E | -0.931241 | 77.78140 |
| F | -610.8054 | -384.2812 |
| G | 95.57260 | -50.93351 |
| H | -589.6930 | -589.6930 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in September, 1966 | Data last reviewed in September, 1966 |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry data, Condensed 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: Marilyn E. Jacox
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 12672 | Ne | 605 | 790 | Weltner and McLeod, 1965 | |||
State: 3A1 ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 8010 ± 100 | L | gas | Davico, Schwartz, et al., 1999 | ||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 945 ± 25 | gas | PE | Davico, Schwartz, et al., 1999 | |
| 2 | Bend | 340 ± 20 | gas | PE | Davico, Schwartz, et al., 1999 | ||
State: 1B1 ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 6260 ± 100 | L | gas | Davico, Schwartz, et al., 1999 | ||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 970 ± 15 | gas | PE | Davico, Schwartz, et al., 1999 | |
State: a
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 2640 ± 100 | L | gas | Davico, Schwartz, et al., 1999 | ||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 995 ± 25 | gas | PE | Davico, Schwartz, et al., 1999 | |
| 2 | Bend | 320 ± 15 | gas | PE | Davico, Schwartz, et al., 1999 | ||
State: ?
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 972 | Ne | AB | Weltner and McLeod, 1965 | |
State: ?
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 2 | Bend | 300 | Ne | AB | Weltner and McLeod, 1965 | |
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 1 | Sym. stretch | 1030.2 | Ne | IR | Lorenz and Bondybey, 1999 Zhou and Andrews, 1999 | |
| 1 | Sym. stretch | 1025.0 | Ar | IR | Zhou and Andrews, 1999 | ||
| 2 | Bend | 325 ± 15 | gas | PE | Davico, Schwartz, et al., 1999 | ||
| b2 | 3 | Asym. stretch | 983.8 | Ne | IR | Lorenz and Bondybey, 1999 Zhou and Andrews, 1999 | |
| 3 | Asym. stretch | 977.9 | Ar | IR | Zhou and Andrews, 1999 | ||
| 3 | Asym. stretch | 975.5 | Kr | IR | Green and Ervin, 1981 | ||
Additional references: Jacox, 1998, page 175; Jacox, 2003, page 105
Notes
| L | Lower bound |
| o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, 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]
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]
Davico, Schwartz, et al., 1999
Davico, G.E.; Schwartz, R.L.; Ramond, T.M.; Lineberger, W.C.,
An Experimental Study of the Low-lying Electron States of WO2,
J. Phys. Chem. A, 1999, 103, 31, 6167, https://doi.org/10.1021/jp9911752
. [all data]
Lorenz and Bondybey, 1999
Lorenz, M.; Bondybey, V.E.,
Isotopically resolved spectra of tungsten oxides in solid neon,
Chem. Phys., 1999, 241, 1, 127, https://doi.org/10.1016/S0301-0104(98)00409-1
. [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]
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
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.