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Helium cation


Ion clustering 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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

He+ + helium = (He+ bullet helium)

By formula: He+ + He = (He+ bullet He)

Quantity Value Units Method Reference Comment
Deltar54.5kcal/molEmSpecDehmer and Pratt, 1982gas phase
Deltar58.8kcal/molSCATTERINGMittman and Weise, 1974gas phase

(He+ bullet helium) + helium = (He+ bullet 2helium)

By formula: (He+ bullet He) + He = (He+ bullet 2He)

Quantity Value Units Method Reference Comment
Deltar4.2kcal/molDTPatterson, 1968gas phase; corrected for ln T term
Quantity Value Units Method Reference Comment
Deltar18.4cal/mol*KDTPatterson, 1968gas phase; corrected for ln T term

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
-1.9300.SAMSGusinow, Gerber, et al., 1970gas phase

(He+ bullet 2helium) + helium = (He+ bullet 3helium)

By formula: (He+ bullet 2He) + He = (He+ bullet 3He)

Quantity Value Units Method Reference Comment
Deltar3.73 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Deltar17.7cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
0.677.DTHelm, 1976gas phase

(He+ bullet 3helium) + helium = (He+ bullet 4helium)

By formula: (He+ bullet 3He) + He = (He+ bullet 4He)

Quantity Value Units Method Reference Comment
Deltar0.64 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Deltar12.8cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

(He+ bullet 4helium) + helium = (He+ bullet 5helium)

By formula: (He+ bullet 4He) + He = (He+ bullet 5He)

Quantity Value Units Method Reference Comment
Deltar0.48 ± 0.15kcal/molPHPMSHiraoka and Mori, 1990gas phase
Quantity Value Units Method Reference Comment
Deltar10.8cal/mol*KPHPMSHiraoka and Mori, 1990gas phase

References

Go To: Top, Ion clustering data, Notes

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

Dehmer and Pratt, 1982
Dehmer, P.M.; Pratt, S.T., Photoionization of ArKr, ArXe, and KrXe and bond dissociation energies of the rare gas dimer ions, J. Chem. Phys., 1982, 77, 4804. [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]

Patterson, 1968
Patterson, P.L., Evidence of the Existence of an He3+ Ion, J. Chem. Phys., 1968, 48, 8, 3625, https://doi.org/10.1063/1.1669660 . [all data]

Gusinow, Gerber, et al., 1970
Gusinow, M.A.; Gerber, R.A.; Gerardo, J.B., He3+ and He4+ in 300K Helium Plasmas: Their Effect on Recombination Loss of Electrons, Phys. Rev. Lett., 1970, 25, 18, 1248, https://doi.org/10.1103/PhysRevLett.25.1248 . [all data]

Hiraoka and Mori, 1990
Hiraoka, K.; Mori, T., Stability of Rare - Gas Cluster Ions, J. Chem. Phys., 1990, 92, 7, 4408, https://doi.org/10.1063/1.457751 . [all data]

Helm, 1976
Helm, H., The Mobilities and Equilibrium Reactions of Helium Ions in Helium at 77K, J. Phys. B, 1976, 9, 7, 1171, https://doi.org/10.1088/0022-3700/9/7/017 . [all data]


Notes

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