uranium dioxide
- Formula: O2U
- Molecular weight: 270.0277
- CAS Registry Number: 1344-57-6
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Condensed phase thermochemistry data
Go To: Top, 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 | -1085.0 ± 1.0 | kJ/mol | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 77.03 ± 0.20 | J/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
Vibrational and/or electronic energy levels
Go To: Top, 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: 2g
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 31838 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Πu | 2 | Bend | 71 ± 10 | gas | MPI | Han, Goncharov, et al., 2004 | |
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 29700 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 27259 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 27120 | Ar | Lue, Jin, et al., 2004 | |||||
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 18423 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
State: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 18159 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
State: 4g
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 17859 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Πu | 2 | Bend | 80 | T | gas | MPI | Han, Goncharov, et al., 2004 |
State: 3D1u
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 1401 | Ar | Lue, Jin, et al., 2004 | |||||
State: 3D2u
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 1094 | Ar | Lue, Jin, et al., 2004 | |||||
State: 3F3u
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| To = 360 ± 5 | gas | Han, Goncharov, et al., 2004 | |||||
| To = 408 | Ar | Lue, Jin, et al., 2004 | |||||
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Πu | 2 | Bend | 135 ± 10 | gas | MPI | Han, Goncharov, et al., 2004 | |
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| Σg+ | 1 | Sym. stretch | 771 ± 10 | Ar | IR LF | Gabelnick, Reedy, et al., 1973 Lue, Jin, et al., 2004 | |
| Πu | 2 | Bend | 121 ± 10 | gas | MPI | Han, Goncharov, et al., 2004 | |
| 2 | Bend | 225.2 | Ar | IR | Green, Reedy, et al., 1980 | ||
| Σu+ | 3 | Asym. stretch | 914.8 | Ne | IR | Sankaran, Sundararajan, et al., 1999 | |
| 3 | Asym. stretch | 776.1 | Ar | IR | Gabelnick, Reedy, et al., 1973 Hunt and Andrews, 1993 Sankaran, Sundararajan, et al., 1999 Zhou, Andrews, et al., 2000 | ||
| 3 | Asym. stretch | 768.0 | Kr | IR | Gabelnick, Reedy, et al., 1973 | ||
Additional references: Jacox, 1998, page 179; Jacox, 2003, page 110
Notes
| T | Tentative assignment or approximate value |
| o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
References
Go To: Top, 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.
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A.,
CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
Han, Goncharov, et al., 2004
Han, J.; Goncharov, V.; Kaledin, L.A.; Komissarov, A.V.; Heaven, M.C.,
Electronic spectroscopy and ionization potential of UO[sub 2] in the gas phase,
J. Chem. Phys., 2004, 120, 11, 5155, https://doi.org/10.1063/1.1647531
. [all data]
Lue, Jin, et al., 2004
Lue, C.J.; Jin, J.; Ortiz, M.J.; Rienstra-Kiracofe, J.C.; Heaven, M.C.,
Electronic Spectroscopy of UO,
J. Am. Chem. Soc., 2004, 126, 6, 1812, https://doi.org/10.1021/ja038940h
. [all data]
Gabelnick, Reedy, et al., 1973
Gabelnick, S.D.; Reedy, G.T.; Chasanov, M.G.,
Infrared spectra of matrix-isolated uranium oxide species. I. The stretching region,
J. Chem. Phys., 1973, 58, 10, 4468, https://doi.org/10.1063/1.1679009
. [all data]
Green, Reedy, et al., 1980
Green, D.W.; Reedy, G.T.; Gabelnick, S.D.,
Infrared spectra of matrix-isolated uranium oxides. III. Low-frequency modes,
J. Chem. Phys., 1980, 73, 9, 4207, https://doi.org/10.1063/1.440704
. [all data]
Sankaran, Sundararajan, et al., 1999
Sankaran, K.; Sundararajan, K.; Viswanathan, K.S.,
A matrix isolation FTIR investigation of laser-ablated uranium oxide in argon and nitrogen matrices,
Bull. Mater. Sci., 1999, 22, 4, 785, https://doi.org/10.1007/BF02745606
. [all data]
Hunt and Andrews, 1993
Hunt, R.D.; Andrews, L.,
Reactions of pulsed-laser evaporated uranium atoms with molecular oxygen: Infrared spectra of UO, UO2, UO3, UO2+, UO22+, and UO3--O2 in solid argon,
J. Chem. Phys., 1993, 98, 5, 3690, https://doi.org/10.1063/1.464045
. [all data]
Zhou, Andrews, et al., 2000
Zhou, M.; Andrews, L.; Ismail, N.; Marsden, C.,
Infrared Spectra of UO,
J. Phys. Chem. A, 2000, 104, 23, 5495, https://doi.org/10.1021/jp000292q
. [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, Condensed phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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