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Xenon dimer ion

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 November, 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 (129,132)Xe2+
Diffuse emission bands 61690 - 63130 cm-1 in a condensed discharge through Xe, tentatively assigned to Xe2+.
missing citation
For the following states preliminary data from photoelectron spectrum Dehmer and Dehmer, 1977. For an evaluation of difference potentials from g-u oscillations in the differential elastic scattering cross section see Mittman and Weise, 1974 Jones, Conklin, et al., 1974. Absolute photodissociation cross sections 14400 - 17700 cm-1 Miller, Ling, et al., 1976.
D (2Sigmag+) 1/2g (17500)           
C (2Piu) 1/2u (16700)           
C (2Piu) 3/2u (8600) 1           
B (2Pig) 1/2g (7000)          B larrow X 
Miller, Ling, et al., 1976
B (2Pig) 3/2g (5300)          B larrow X 
Miller, Ling, et al., 1976
X 2Sigmau+ 0         (3.25) 2  


2Estimated value Mulliken, 1974.
3D00(Xe2) + I.P.(Xe)-I.P.(Xe2). Values of 0.97 and 0.99 eV for De0 have been derived by Lorentz, Olson, et al., 1973 and Mittman and Weise, 1974 from elastic scattering of Xe+ by Xe using ground state re values which differ slightly from the one given in the Table.


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

Dehmer and Dehmer, 1977
Dehmer, P.M.; Dehmer, J.L., Photoelectron spectrum of the Xe2 van der Waals molecule, J. Chem. Phys., 1977, 67, 1774. [all data]

Mittman and Weise, 1974
Mittman, H.U.; Weise, H.P., Scattering of Ions V. Elastic Scattering of the Symmetric Rare Gas Ion - Rare Gas Atom Systems, Z. Naturforsch., 1974, A29, 400. [all data]

Jones, Conklin, et al., 1974
Jones, P.R.; Conklin, G.M.; Lorents, D.C.; Olson, R.E., Differential elastic-scattering measurements of Xe+ on Xe and Ar+ on Ar in the 20-340-eV range, Phys. Rev. A: Gen. Phys., 1974, 10, 102. [all data]

Miller, Ling, et al., 1976
Miller, T.M.; Ling, J.H.; Saxon, R.P.; Moseley, J.T., Absolute total cross sections for the photodissociation of AR2+, Kr2+, Xe2+, KrN2+, and KrN+ from 565 to 695 nm, Phys. Rev. A: Gen. Phys., 1976, 13, 2171-2177. [all data]

Mulliken, 1974
Mulliken, R.S., Potential energy curves and radiative transition probabilities for rare-gas molecules, Radiat. Res., 1974, 59, 357. [all data]

Lorentz, Olson, et al., 1973
Lorentz, D.C.; Olson, R.E.; Conklin, G.M., Rainbow Scattering for Ar+ + Ar and Xe+ + Xe, Chem. Phys. Lett., 1973, 20, 6, 589, https://doi.org/10.1016/0009-2614(73)80508-1 . [all data]


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