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Terbium monoxide

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 June, 1975

Symbols used in the table of constants
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)
Diatomic constants for 159Tb16O
Mostly R shaded emission bands in the region 15400 - 19000 cm-1; no analysis.
missing citation; Herrmann and Alkemade, 1963
X 0 [824.3] 1          
Gabelnick, Reedy, et al., 1974


1From the IR spectrum of Tb16O in argon at 15 K; for Tb18O at 781.7 cm-1. Derived constants omegae = 828.4 Gabelnick, Reedy, et al., 1974, omegaexe = 2.1 Gabelnick, Reedy, et al., 1974.
2Thermochemical value (mass-spectrometry) Ames, Walsh, et al., 1967, recalculated Smoes, Coppens, et al., 1969.


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.

Herrmann and Alkemade, 1963
Herrmann, R.; Alkemade, C.T.J., Chemical analysis by flame photometry [Second Revised Edition], Interscience Publishers, New York, 1963, 644. [all data]

Gabelnick, Reedy, et al., 1974
Gabelnick, S.D.; Reedy, G.T.; Chasanov, M.G., Infrared spectra and structure of some matrix-isolated lanthanide and actinide oxides, J. Chem. Phys., 1974, 60, 3, 1167, https://doi.org/10.1063/1.1681128 . [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]


Go To: Top, Constants of diatomic molecules, References