Cerium monoxide
- Formula: CeO
- Molecular weight: 156.115
- CAS Registry Number: 12014-74-3
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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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to CeO+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
4.9 ± 0.1 | EI | Ackermann, Rauh, et al., 1976 | LLK |
5.3 ± 0.5 | EI | Piacente, Bardi, et al., 1973 | LLK |
6.0 ± 0.5 | EI | Gingerich and Pupp, 1971 | LLK |
5.2 ± 0.2 | EI | Ackermann and Rauh, 1971 | LLK |
5.2 ± 0.5 | EI | Staley and Norman, 1969 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
Ce+ | ~13.5 | O | EI | Ackermann and Rauh, 1971 | LLK |
Constants of diatomic molecules
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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 by: Klaus P. Huber and Gerhard H. Herzberg
Data collected through December, 1974
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Large number of bands in the region 11000 - 29000 cm-1 Gatterer, Junkes, et al., 1957*. Tentative assignments by Ames and Barrow, 1967 Rosen, 1970, revising earlier assignments in Watson, 1938 Gatterer, Junkes, et al., 1957. | ||||||||||||
D1 | D1 ↔ X1 R | 21379.1 HQ | ||||||||||
↳Ames and Barrow, 1967; Rosen, 1970 | ||||||||||||
F2 | (772) | [0.35290] | [2.95E-07] | [1.82426] | F2 ↔ X2 R | 20834.21 Z | ||||||
↳Ames and Barrow, 1967; Rosen, 1970; Watson, 1938 | ||||||||||||
D3 | D3 ↔ X3 R | 20516.1 HQ | ||||||||||
↳Rosen, 1970; Watson, 1938 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
C1 | (798) | [0.34984] | [2.69E-07] | [1.832222] | C1 ↔ X1 R | 20273.84 Z | ||||||
↳Ames and Barrow, 1967; Rosen, 1970 | ||||||||||||
A4 | A4 ↔ X4 R | 19871.7 HQ | ||||||||||
↳Rosen, 1970 | ||||||||||||
C3 | C3 ↔ X3 R | 16356.9 HR | ||||||||||
↳Rosen, 1970 | ||||||||||||
G 1Π | G ↔ Y1 R | 15035.40 HQ | ||||||||||
↳Rosen, 1970 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
B2 | (771) | [0.34705] | [2.81E-07] | [1.83958] | B2 ↔ X2 R | 13804.01 Z | ||||||
↳Ames and Barrow, 1967; Rosen, 1970; Watson, 1938 | ||||||||||||
A2 | A2 ↔ X2 R | 12687.91 HQ | ||||||||||
↳Rosen, 1970; Watson, 1938 | ||||||||||||
A1 | (749) | [0.34672] | [2.97E-07] | [1.84045] | A1 ↔ X1 R | 12595.75 Z | ||||||
↳Ames and Barrow, 1967; Rosen, 1970 | ||||||||||||
A3 | A3 ↔ X3 V | 12162.20 HQ | ||||||||||
↳Rosen, 1970 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
Y4 (3Δ3) 1 | (886) | [0.35065] | [0.00000023] | [1.8301] | ||||||||
Y3 (3Δ2) 1 | (509) | [0.3614] | [0.00000073] | [1.8027] | ||||||||
Y2 (3Δ1) 1 | (884) | [0.35214] | [0.000000245] | [1.82623] | ||||||||
Y1 1Σ(+) 1 | (850) | [0.35790] | [0.000000254] | [1.81148] | ||||||||
X4 (1Φ3) 1 | x2 + 2065 2 | (818) | 0.35710 | 0.00108 | [0.000000271] | 1.81350 | ||||||
X3 3Φ4 1 | (932) | 0.35377 | 0.00114 | [0.000000203] | 1.82202 | |||||||
X2 3Φ3 1 | x2 | [822.76] (Z) | (3.09) | 0.35779 | 0.00179 | [0.000000269] | 1.81175 | |||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
X1 3Π2 1 | (862) | [0.35452] | [2.40E-07] | 1.82009 |
Notes
1 | These states give rise to absorption bands at a temperature of 2173 K Rosen, 1970. No details given for transitions from Y2, Y3, Y4. |
2 | X4(v=0) is at 2060.25 cm-1 above X2(v=0). All other separations are unknown [ Rosen, 1970, no details]. |
3 | Thermochemical value (mass-spectrom.) Walsh, Dever, et al., 1961, Ames, Walsh, et al., 1967, Coppens, Smoes, et al., 1967, Ackermann and Rauh, 1974. |
References
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ackermann, Rauh, et al., 1976
Ackermann, R.J.; Rauh, E.G.; Thorn, R.J.,
The thermodynamics of ionization of gaseous oxides; the first ionization potentials of the lanthanide metals and monoxides,
J. Chem. Phys., 1976, 65, 1027. [all data]
Piacente, Bardi, et al., 1973
Piacente, V.; Bardi, G.; Malaspina, L.; Desideri, A.,
Dissociation energy of CeO2 and Ce2O2 molecules,
J. Chem. Phys., 1973, 59, 31. [all data]
Gingerich and Pupp, 1971
Gingerich, K.A.; Pupp, C.,
Mass spectrometric determination of the heats of formation atomization of gaseous AuBO,
J. Chem. Phys., 1971, 54, 3713. [all data]
Ackermann and Rauh, 1971
Ackermann, R.J.; Rauh, E.G.,
A high-temperature study of the stoichiometry, phase behavior, vaporization characteristics, and thermodynamic properties of the cerium + oxygen system,
J. Chem. Thermodyn., 1971, 3, 609. [all data]
Staley and Norman, 1969
Staley, H.G.; Norman, J.H.,
Thermodynamics of gaseous monoxide-dioxide equilibria for cerium, praseodymium and neodymium,
Intern. J. Mass Spectrom. Ion Phys., 1969, 2, 35. [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]
Ames and Barrow, 1967
Ames, L.L.; Barrow, R.F.,
Rotational analysis of absorption bands of CeO,
Proc. Phys. Soc. London, 1967, 90, 869. [all data]
Rosen, 1970
Rosen, B.,
International tables of selected constants. 17. Spectroscopic data relative to diatomic molecules, Pub. Pergamon Press, Oxford, 1970, 0. [all data]
Watson, 1938
Watson, W.W.,
Spectra of the monoxides of cerium and praseodymium,
Phys. Rev., 1938, 53, 639. [all data]
Walsh, Dever, et al., 1961
Walsh, P.N.; Dever, D.F.; White, D.,
Rare Earths. III. A mass-spectrometric investigation of the isomolecular oxygen-exchange reactions of lanthanum, cerium, praseodymium and neodymium with their monoxides,
J. Phys. Chem., 1961, 65, 1410. [all data]
Ames, Walsh, et al., 1967
Ames, L.L.; Walsh, P.N.; White, D.,
Rare earths. IV. Dissocaition energies of the gaseous monoxides of the rare earths,
J. Phys. Chem., 1967, 71, 2707. [all data]
Coppens, Smoes, et al., 1967
Coppens, P.; Smoes, S.; Drowart, J.,
Mass spectrometric determination of the dissociation energies of the molecules GeS, ScS, YS, LaS, and CeS,
Trans. Faraday Soc., 1967, 63, 2140. [all data]
Ackermann and Rauh, 1974
Ackermann, R.J.; Rauh, E.G.,
Thermodynamic properties of ZrO (g) and HfO (g); a critical examination of isomolecular oxygen-exchange reactions,
J. Chem. Phys., 1974, 60, 2266. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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