Lithium dimer
- Formula: Li2
- Molecular weight: 13.882
- IUPAC Standard InChIKey: SMBQBQBNOXIFSF-UHFFFAOYSA-N
- CAS Registry Number: 14452-59-6
- Chemical structure:
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Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 5.1127 ± 0.0003 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 1162. | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 1133.1 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
4.73 ± 0.05 | PI | Dugourd, Rayane, et al., 1992 | LL |
5.1127 ± 0.0003 | S | McGeogh and Schlier, 1983 | LBLHLM |
5.14 | PI | Eisel and Demtroder, 1982 | LBLHLM |
5.0 ± 0.3 | EI | N/A | LLK |
5.00 | EVAL | Huber and Herzberg, 1979 | LLK |
5.174 ± 0.013 | PI | Mathur, Rothe, et al., 1978 | LLK |
5.0 | EI | Zmbov, Wu, et al., 1977 | LLK |
4.9 ± 0.1 | EI | N/A | LLK |
4.9 ± 0.1 | EI | Ihle and Wu, 1975 | LLK |
4.9 ± 0.1 | EI | Emel'yanov, Peredvigina, et al., 1971 | LLK |
5.2 ± 0.1 | PI | Foster, Leckenby, et al., 1969 | RDSH |
5.0 ± 0.1 | S | Velasco, 1960 | RDSH |
References
Go To: Top, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Dugourd, Rayane, et al., 1992
Dugourd, P.; Rayane, D.; Labastie, P.; Vezin, B.; Chevaleyre, J.; Broyer, M.,
Measurements of lithium cluster ionization potentials,
Chem. Phys. Lett., 1992, 197, 433. [all data]
McGeogh and Schlier, 1983
McGeogh, M.W.; Schlier, R.E.,
Autoionizing Rydberg states of the Li2 molecule: Molecular constants for Li2+,
Chem. Phys. Lett., 1983, 99, 347. [all data]
Eisel and Demtroder, 1982
Eisel, D.; Demtroder, W.,
Accurate ionization potential of Li2 from resonant two-photon ionization,
Chem. Phys. Lett., 1982, 88, 481. [all data]
Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G.,
Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]
Mathur, Rothe, et al., 1978
Mathur, B.P.; Rothe, E.W.; Reck, G.P.; Lightman, A.J.,
Two-photon ionization of Li2: isotopic separation and determination of IP(Li2) and De (Li2+),
Chem. Phys. Lett., 1978, 56, 336. [all data]
Zmbov, Wu, et al., 1977
Zmbov, K.F.; Wu, C.H.; Ihle, H.R.,
A mass spectrometric study of heteronuclear diatomic alkali metal molecules. Dissociation energies ionization potentials of NaLi, KLi, NaK,
J. Chem. Phys., 1977, 67, 4603. [all data]
Ihle and Wu, 1975
Ihle, H.R.; Wu, C.H.,
Mass spectrometric determination of the ionization potential and dissociation energy of LiD,
J. Chem. Phys., 1975, 63, 1605. [all data]
Emel'yanov, Peredvigina, et al., 1971
Emel'yanov, A.M.; Peredvigina, V.A.; Gorokhov, L.N.,
Ionization potentials of Li2 and Na2 molecules and the dissociation energy of Li2+ and Na2+ ions,
Teplofiz. Vysokikh Temperatur, 1971, 9, 190, In original 164. [all data]
Foster, Leckenby, et al., 1969
Foster, P.J.; Leckenby, R.E.; Robbins, E.J.,
The ionization potentials of clustered alkali metal atoms,
J. Phys. B:, 1969, 2, 478. [all data]
Velasco, 1960
Velasco, R.,
Espectro ultravioleta de la molecula Li2,
An. R. Soc. Esp. Fis. Quim., 1960, 175. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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