Gadolinium monoxide
- Formula: GdO
- Molecular weight: 173.25
- IUPAC Standard InChI: InChI=1S/Gd.O/q+2;-2
- IUPAC Standard InChIKey: VXNHQIPMWKWPAV-UHFFFAOYSA-N
- CAS Registry Number: 12024-77-0
- Chemical structure:
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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 January, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Large number of mostly R shaded bands in emission from 13300 to 22500 cm-1. | ||||||||||||
| ↳missing citation; missing citation | ||||||||||||
| Two systems of bands with multiple heads were idenified by Piccardi, 1933 and confirmed and extended by Gatterer, Junkes, et al., 1957, Suarez and Grinfeld, 1970: | ||||||||||||
| System I: 1 | R | 21659.3 H | ||||||||||
| ↳Piccardi, 1933; Gatterer, Junkes, et al., 1957; Suarez and Grinfeld, 1970 | ||||||||||||
| System II: 2 | R | 20435.5 H | ||||||||||
| ↳Piccardi, 1933; Gatterer, Junkes, et al., 1957; Suarez and Grinfeld, 1970 | ||||||||||||
| Assignments at longer wavelengths are less certain, and considerable disagreement exists between analyses by Piccardi, 1933 Gatterer, Junkes, et al., 1957 Suarez and Grinfeld, 1970 except in the region 15700 - 16200 cm-1 where three long sequences have been identified: | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| R | 16170 H | |||||||||||
| ↳Piccardi, 1933; Gatterer, Junkes, et al., 1957; Suarez and Grinfeld, 1970 | ||||||||||||
| R | 16122 H | |||||||||||
| ↳Piccardi, 1933; Gatterer, Junkes, et al., 1957; Suarez and Grinfeld, 1970 | ||||||||||||
| R | 16094 H | |||||||||||
| ↳Piccardi, 1933; Gatterer, Junkes, et al., 1957; Suarez and Grinfeld, 1970 | ||||||||||||
Notes
| 1 | νH = 21700.5 + 748.0(v'+1/2) - 3.0(v'+1/2)2 - 830.1(v"+1/2) + 2.3(v"+1/2)2 |
| 2 | νH = 20470.5 + 767.0(v'+1/2) - 4.9(v'+1/2)2 - 836.0(v"+1/2) + 2.8(v"+1/2)2 |
| 3 | Thermochemical value (mass-spectrom.) Ames, Walsh, et al., 1967, Smoes, Coppens, et al., 1969, Drowart, Myers, et al., 1979. |
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.
Piccardi, 1933
Piccardi, G.,
Sullo spettro dell'ossido di gadolinio,
Gazz. Chim. Ital., 1933, 63, 887. [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]
Suarez and Grinfeld, 1970
Suarez, C.B.; Grinfeld, R.,
Contribution to the study of GdO band spectrum,
J. Chem. Phys., 1970, 53, 1110. [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]
Smoes, Coppens, et al., 1969
Smoes, S.; Coppens, P.; Bergman, C.; Drowart, J.,
Mass spectrometric determination of the dissociation energies of the gaseous rare earth monosulphides,
Trans. Faraday Soc., 1969, 65, 682. [all data]
Drowart, Myers, et al., 1979
Drowart; Myers; Szwarc; Vander Auwera-Mahieu; Uy,
To be published cited in Huber and Herzberg, 1979, 1979, 229. [all data]
Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G.,
Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Company, New York, 1979, 716. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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