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Chlorine anion


Gas phase thermochemistry data

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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: John E. Bartmess

Quantity Value Units Method Reference Comment
Deltafgas-231. ± 19.kJ/molR-EADispert and Lacmann, 1977 

Constants of diatomic molecules

Go To: Top, Gas phase thermochemistry data, 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 September, 1976

Symbols used in the table of constants
SymbolMeaning
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 (35)Cl2-
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
(2Pig) [79400] 650 1          
Spence, 1974
X (2Sigmau+) [0] 2           

Notes

1Single progression of resonances in the scattering of electrons by Cl2 indicating the existence of a doubly excited (preionizing) state of Cl2- with the X 2Pig state of Cl2+ as "grandparent" Spence, 1974.
2For computed ground state characteristics see Gilbert and Wahl, 1971.
3From D00 (Cl2) and the electron affinities of Cl2 and Cl (3.613 ev).
4From endoergic charge transfer Chupka, Berkowitz, et al., 1971, Baeda, 1972, Hughes, Lifschitz, et al., 1973, Tang, Leffert, et al., 1975; slightly higher value (2.52 eV) from dissociative electron attachment DeCorpo and Franklin, 1971.

References

Go To: Top, Gas phase thermochemistry data, 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.

Dispert and Lacmann, 1977
Dispert, H.; Lacmann, K., Chemiionization in alkali-halogen reactions: Evidence for ion formation by alkali dimers, Chem. Phys. Lett., 1977, 47, 533. [all data]

Spence, 1974
Spence, D., Systematics of Feshbach resonances in the molecular halogens, Phys. Rev. A: Gen. Phys., 1974, 10, 1045. [all data]

Gilbert and Wahl, 1971
Gilbert, T.L.; Wahl, A.C., Single-configuration wavefunctions and potential curves for low-lying states of He2+, Ne2+, Ar2+, F2-, Cl2-, and the ground state of Cl2, J. Chem. Phys., 1971, 55, 5247. [all data]

Chupka, Berkowitz, et al., 1971
Chupka, W.A.; Berkowitz, J.; Gutman, D., Electron Affinities of Halogen Diatomic Molecules as Determined by Endoergic Charge Exchange, J. Chem. Phys., 1971, 55, 6, 2724, https://doi.org/10.1063/1.1676487 . [all data]

Baeda, 1972
Baeda, A.P.M., The adiabatic electron affinities of Cl2, Br2, I2, IBr, NO2, and O2, Physica, 1972, 59, 541. [all data]

Hughes, Lifschitz, et al., 1973
Hughes, B.M.; Lifschitz, C.; Tiernan, T.O., Electron affinities from endothermic negative-ion charge-transfer reactions. III. NO, NO2, S2, CS2, Cl2, Br2, I2, and C2H, J. Chem. Phys., 1973, 59, 3162. [all data]

Tang, Leffert, et al., 1975
Tang, S.Y.; Leffert, C.B.; Rothe, E.W., Ionizing collisions of cesium with Cl2, Br2, and I2, J. Chem. Phys., 1975, 62, 132. [all data]

DeCorpo and Franklin, 1971
DeCorpo, J.J.; Franklin, J.L., Electron affinities of the halogen molecules by dissociative electron attachment, J. Chem. Phys., 1971, 54, 1885. [all data]


Notes

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