Disodium
- Formula: Na2
- Molecular weight: 45.97953856
- IUPAC Standard InChIKey: QXNVGIXVLWOKEQ-UHFFFAOYSA-N
- CAS Registry Number: 25681-79-2
- Chemical structure:
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Gas phase ion energetics data
Go To: Top, References, Notes
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
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 4.892 ± 0.003 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 1146.8 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 1118.2 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.430 ± 0.015 | LPES | McHugh, Eaton, et al., 1989 | Vertical Detachment Energy: 0.543±0.010 eV; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
4.8947 ± 0.0001 | TE | Buhler, 1990 | LL |
4.8951 ± 0.0002 | PI | Kappes, Radi, et al., 1985 | LBLHLM |
4.91 ± 0.04 | PI | Peterson, Dao, et al., 1984 | LBLHLM |
4.897 ± 0.006 | S | Martin, Chevaleyre, et al., 1982 | LBLHLM |
4.88898 ± 0.00016 | LS | Leutwyler, Hofmann, et al., 1981 | LLK |
4.934 ± 0.011 | PI | Herrmann, Schumacher, et al., 1978 | LLK |
4.866 ± 0.014 | LS | Herrmann, Schumacher, et al., 1978 | LLK |
4.866 ± 0.014 | PI | Herrmann, Leutwyler, et al., 1978 | LLK |
4.9 | EI | Zmbov, Wu, et al., 1977 | LLK |
4.8 ± 0.1 | EI | Emel'yanov, Peredvigina, et al., 1971 | LLK |
4.9 ± 0.1 | PI | Robbins, Leckenby, et al., 1967 | RDSH |
4.90 ± 0.01 | PI | Hudson, 1965 | RDSH |
~4.87 | S | Barrow, Travis, et al., 1960 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
Na+ | 5.91 ± 0.09 | Na | PI | Wagner and Isenor, 1983 | LBLHLM |
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]
McHugh, Eaton, et al., 1989
McHugh, K.M.; Eaton, J.G.; Lee, G.H.; Sarkas, H.W.; Kidder, L.H.; Snodgrass, J.T.; Manaa, M.R.; Bowen, K.H.,
Photoelectron Spectra of the alkali metal cluster Anions: Na-,n=2-5, K-,n=2-7, Rb-,n=2-3, and Cs-,n=2-3,
J. Chem. Phys., 1989, 91, 6, 3792, https://doi.org/10.1063/1.456861
. [all data]
Buhler, 1990
Buhler, B.,
[Title unavailable], Ph. D. Thesis, Fakultat fur Physik, Universitat Freiburg, 1990. [all data]
Kappes, Radi, et al., 1985
Kappes, M.M.; Radi, P.; Schar, M.; Schumacher, E.,
Photoionization measurements on dialkali monohalides generated in supersonic nozzle beams,
Chem. Phys. Lett., 1985, 113, 243. [all data]
Peterson, Dao, et al., 1984
Peterson, K.I.; Dao, P.D.; Farley, R.W.; Castleman, A.W., Jr.,
Photoionization of sodium clusters,
J. Chem. Phys., 1984, 80, 1780. [all data]
Martin, Chevaleyre, et al., 1982
Martin, S.; Chevaleyre, J.; Valignat, S.; Perrot, J.P.; Broyer, M.; Cabaud, B.; Hoareau, A.,
Autoionizing Rydberg states of the Na2 molecule,
Chem. Phys. Lett., 1982, 87, 235. [all data]
Leutwyler, Hofmann, et al., 1981
Leutwyler, S.; Hofmann, M.; Harri, H.-P.; Schumacher, E.,
The adiabatic ionization potentials of the alkali dimers Na2, NaK and K2,
Chem. Phys. Lett., 1981, 77, 257. [all data]
Herrmann, Schumacher, et al., 1978
Herrmann, A.; Schumacher, E.; Woste, L.,
Preparation and photoionization potentials of molecules of sodium, potassium and mixed atoms,
J. Chem. Phys., 1978, 68, 2327. [all data]
Herrmann, Leutwyler, et al., 1978
Herrmann, A.; Leutwyler, S.; Schumacher, E.; Woste, L.,
38. On metal-atom clusters IV. Photoionization thresholds and multiphoton ionization spectra of alkali-metal molecules,
Helv. Chim. Acta, 1978, 61, 453. [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]
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]
Robbins, Leckenby, et al., 1967
Robbins, E.J.; Leckenby, R.E.; Willis, P.,
The ionization potentials of clustered sodium atoms,
Advan. Phys., 1967, 16, 739. [all data]
Hudson, 1965
Hudson, R.D.,
Measurements of the molecular absorption cross section and the photoionization of sodium vapor between 1600 and 3700,
J. Chem. Phys., 1965, 43, 1790. [all data]
Barrow, Travis, et al., 1960
Barrow, R.F.; Travis, N.; Wright, C.V.,
Excited electronic states of lithium and sodium molecules,
Nature, 1960, 187, 141. [all data]
Wagner and Isenor, 1983
Wagner, G.; Isenor, N.R.,
Formation and dissociation of Na2+ by ruby laser radiation,
Can. J. Phys., 1983, 61, 40. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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