Cerium monoxide
- Formula: CeO
- Molecular weight: 156.115
- CAS Registry Number: 12014-74-3
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Constants of diatomic molecules
Go To: Top, 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 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, 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.
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
Go To: Top, Constants of diatomic molecules, References
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