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Argon, compound with neon (1:1)

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 March, 1977

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 (20)Ne40Ar
X 1Sigma+ 0 [(20.9)] 1        3.43 2 3  
Bosomworth and Gush, 1965


1Theoretical values Bobetic and Barker, 1976; the ground state potential supports four bound vibrational levels.
2From crossed-beam differential scattering measurements Ng, Lee, et al., 1974.
3Translational sp. 4
4Dipole moment function from ab initio calculations Matcha and Nesbet, 1967, from translational absorption spectra Bar-Ziv and Weiss, 1973.


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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Bosomworth and Gush, 1965
Bosomworth, D.R.; Gush, H.P., Collision-induced absorption of compressed gases in the far infrared, Part II, Can. J. Phys., 1965, 43, 751. [all data]

Bobetic and Barker, 1976
Bobetic, M.V.; Barker, J.A., Vibrational levels of heteronuclear rare gas van der Waals molecules, J. Chem. Phys., 1976, 64, 2367-2369. [all data]

Ng, Lee, et al., 1974
Ng, C.Y.; Lee, Y.T.; Barker, J.A., Improved potentials for Ne + Ar, Ne + Kr, and Ne + Xe, J. Chem. Phys., 1974, 61, 1996. [all data]

Matcha and Nesbet, 1967
Matcha, R.L.; Nesbet, R.K., Electric dipole moments of rare-gas diatomic molecules, Phys. Rev., 1967, 160, 1, 72-75. [all data]

Bar-Ziv and Weiss, 1973
Bar-Ziv, E.; Weiss, S., Dipole moment of interacting rare-gas atoms, Chem. Phys. Lett., 1973, 19, 1, 148-151. [all data]


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