Xenon cation

Formula: Xe⁺
Molecular weight: 131.292
CAS Registry Number: 24203-25-6
Information on this page:
Other data available:
- Gas phase thermochemistry data
- Ion clustering data
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Reaction thermochemistry data

Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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Individual Reactions

(Xe⁺ • ) + = (Xe⁺ • 2)

By formula: (Xe⁺ • Xe) + Xe = (Xe⁺ • 2Xe)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	6.8	kcal/mol	DT	Helm, 1976	gas phase; corrected for ln T by Keesee and Castleman, 1986
Δ_rH°	6.75	kcal/mol	DT	Helm, 1976	gas phase; corrected for ln T by Keesee and Castleman, 1986
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.7	cal/mol*K	DT	Helm, 1976	gas phase; corrected for ln T by Keesee and Castleman, 1986
Δ_rS°	18.7	cal/mol*K	DT	Helm, 1976	gas phase; corrected for ln T by Keesee and Castleman, 1986

Xe⁺ + = (Xe⁺ • )

By formula: Xe⁺ + Xe = (Xe⁺ • Xe)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.8	kcal/mol	PI	Ng, Trevor, et al., 1976	gas phase
Δ_rH°	22.8	kcal/mol	SCATTERING	Mittman and Weise, 1974	gas phase
Δ_rH°	22.4	kcal/mol	SCATTERING	Lorentz, Olson, et al., 1973	gas phase
Δ_rH°	22.8	kcal/mol	PI	Samson, 1966	gas phase

Xe⁺ + = (Xe⁺ • )

By formula: Xe⁺ + Ar = (Xe⁺ • Ar)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.1	kcal/mol	PI	Dehmer and Pratt, 1982	gas phase
Δ_rH°	6.0	kcal/mol	SIFT	Jones, Lister, et al., 1980	gas phase
Δ_rH°	3.2	kcal/mol	PI	Ng, Tiedemann, et al., 1977	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.4	cal/mol*K	SIFT	Jones, Lister, et al., 1980	gas phase

(Xe⁺ • 2) + = (Xe⁺ • 3)

By formula: (Xe⁺ • 2Xe) + Xe = (Xe⁺ • 3Xe)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	6.03 ± 0.15	kcal/mol	PHPMS	Hiraoka and Mori, 1990	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	15.1	cal/mol*K	PHPMS	Hiraoka and Mori, 1990	gas phase

(Xe⁺ • 3) + = (Xe⁺ • 4)

By formula: (Xe⁺ • 3Xe) + Xe = (Xe⁺ • 4Xe)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.64 ± 0.15	kcal/mol	PHPMS	Hiraoka and Mori, 1990	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	13.1	cal/mol*K	PHPMS	Hiraoka and Mori, 1990	gas phase

Xe⁺ + = (Xe⁺ • )

By formula: Xe⁺ + Kr = (Xe⁺ • Kr)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.9	kcal/mol	PI	Dehmer and Pratt, 1982	gas phase
Δ_rH°	8.5	kcal/mol	PI	Ng, Tiedemann, et al., 1977	gas phase

Xe⁺ + = (Xe⁺ • )

By formula: Xe⁺ + Ne = (Xe⁺ • Ne)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	0.95	kcal/mol	PI	Dehmer and Pratt, 1982	gas phase

References

Go To: Top, Reaction thermochemistry data, Notes

Helm, 1976
Helm, H., Formation of Xe3+ Ions in Xenon at Temperatures Between 210 and 293 K, Phys. Rev. A, 1976, 14, 2, 680, https://doi.org/10.1103/PhysRevA.14.680 . [all data]

Keesee and Castleman, 1986
Keesee, R.G.; Castleman, A.W., Jr., Thermochemical data on Ggs-phase ion-molecule association and clustering reactions, J. Phys. Chem. Ref. Data, 1986, 15, 1011. [all data]

Ng, Trevor, et al., 1976
Ng, C.Y.; Trevor, D.J.; Mahan, B.H.; Lee, Y.T., Photoionization Study of the Xe2 van der Waals Molecule, J. Chem. Phys., 1976, 65, 10, 4327, https://doi.org/10.1063/1.432849 . [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]

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]

Samson, 1966
Samson, J.A.R., Ionization Potential of Molecular Xenon and Krypton, J. Opt. Soc. Am., 1966, 56, 8, 1140, https://doi.org/10.1364/JOSA.56.001140 . [all data]

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]

Jones, Lister, et al., 1980
Jones, J.D.C.; Lister, D.G.; Twiddy, N.D., Equilibrium Constant for the Reaction Xe+ + 2Ar ---> XeAr+ + Ar in the Temperature Range 150 - 300 K and the Dissociation Energy of XeAr+, Chem. Phys. Lett., 1980, 70, 3, 575, https://doi.org/10.1016/0009-2614(80)80128-X . [all data]

Ng, Tiedemann, et al., 1977
Ng, C.Y.; Tiedemann, P.W.; Mahan, B.H.; Lee, Y.T., Photoionization Studies of the Diatomic Internuclear Rare Gas Molecules XeKr, XeAr, and KrAr, J. Chem. Phys., 1977, 66, 12, 5737, https://doi.org/10.1063/1.433848 . [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]

Notes

Go To: Top, Reaction thermochemistry data, References

Symbols used in this document:

Δ_rH° Enthalpy of reaction at standard conditions

Δ_rS° Entropy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions