Uranium monoxide
- Formula: OU
- Molecular weight: 254.0283
- IUPAC Standard InChI: InChI=1S/O.U
- IUPAC Standard InChIKey: ARCUKJFDARVQKH-UHFFFAOYSA-N
- CAS Registry Number: 12035-97-1
- Chemical structure:
This structure is also available as a 2d Mol file - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Gas phase ion energetics 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.
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
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 5.66 | EVAL | Huber and Herzberg, 1979 | LLK |
| 5.6 ± 0.1 | EI | Rauh and Ackermann, 1974 | LLK |
| 4.3 ± 1.5 | EI | Blackburn and Danielson, 1972 | LLK |
| 5.7 ± 0.4 | EI | Pattoret, Drowart, et al., 1968 | RDSH |
| 5.72 ± 0.06 | EI | Mann, 1964 | RDSH |
| 4.7 ± 0.6 | EI | DeMaria, Burns, et al., 1960 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| U+ | 13.4 | O | EI | Gingerich and Lee, 1964 | RDSH |
Constants of diatomic molecules
Go To: Top, Gas phase ion energetics 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 June, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Very weak band structure in emission from an arc; no measurements. | ||||||||||||
| ↳Gatterer, Junkes, et al., 1957 | ||||||||||||
| X | [820.0] 1 | |||||||||||
Notes
| 1 | IR spectrum of U16O in Ar matrix at 15 K Carstens, Gruen, et al., 1972, Gabelnick, Reedy, et al., 1973. For U18O at 776.3 cm-1. Derived constants for U16O are ωe = 825.0, ωexe = 2.5. |
| 2 | Thermochemical value (mass-spectrometry) Drowart, Pattoret, et al., 1967, Coppens, Smoes, et al., 1968, Pattoret, Drowart, et al., 1967. |
| 3 | Electron impact appearance potential, average of two values Mann, 1964, Rauh and Ackermann, 1974. |
References
Go To: Top, Gas phase ion energetics 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.
Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G.,
Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]
Rauh and Ackermann, 1974
Rauh, E.G.; Ackermann, R.J.,
First ionization potentials of some refractory oxide vapors,
J. Chem. Phys., 1974, 60, 1396. [all data]
Blackburn and Danielson, 1972
Blackburn, P.E.; Danielson, P.M.,
Electron impact relative ionization cross sections fragmentation of U, UO, UO2, and UO3,
J. Chem. Phys., 1972, 56, 6156. [all data]
Pattoret, Drowart, et al., 1968
Pattoret, A.; Drowart, J.; Smoes, S.,
Etudes thermodynamiques par spectrometrie de masse sur le systeme uranium-oxygene
in Thermodyn. Nucl. Mater. Proc. Symp., 1967 Vienna, 1968, 613. [all data]
Mann, 1964
Mann, J.B.,
Ionization of U, UO, and UO2 by electron impact,
J. Chem. Phys., 1964, 40, 1632. [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]
Gingerich and Lee, 1964
Gingerich, K.A.; Lee, P.K.,
Mass spectrometric study of the vaporization of uranium monophosphide,
J. Chem. Phys., 1964, 40, 3520. [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]
Carstens, Gruen, et al., 1972
Carstens, D.H.W.; Gruen, D.M.; Kozlowski, J.F.,
Vibrational spectra of chemically sputtered uranium oxide molecules isolated in noble gas matrices,
High Temp. Sci., 1972, 4, 436. [all data]
Gabelnick, Reedy, et al., 1973
Gabelnick, S.D.; Reedy, G.T.; Chasanov, M.G.,
The infrared spectrum of matrix-isolated uranium oxide vapor species,
Chem. Phys. Lett., 1973, 19, 90. [all data]
Drowart, Pattoret, et al., 1967
Drowart, J.; Pattoret, A.; Smoes, S.,
Mass spectrometric studies of the vaporization of refractory compounds,
Proc. Br. Ceram. Soc., 1967, 8, 67. [all data]
Coppens, Smoes, et al., 1968
Coppens, P.; Smoes, S.; Drowart, J.,
Mass spectrometric determination of the dissociation energy of the molecule BO,
Trans. Faraday Soc., 1968, 64, 630. [all data]
Pattoret, Drowart, et al., 1967
Pattoret, A.; Drowart, J.; Smoes, S.,
Etudes thermodynamiques par spectrometrie de masse sur le systeme uranium-oxygene
in Thermodynamics of nuclear materials (Proc. Symp. Thermodynamics, Vienna 1967), Publ. IAEA, Vienna, 1967, 613-636. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, References
- Symbols used in this document:
AE Appearance energy - 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.