Argon cation

• Formula: Ar⁺
• Molecular weight: 39.947
• CAS Registry Number: 14791-69-6
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Ion clustering data
  • References
  • Notes
• Options:
  • Switch to calorie-based units

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.

Reaction 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: 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. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + Ar = (Ar⁺ • Ar)

(Ar⁺ • 2) +  = (Ar⁺ • 3)

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

Free energy of reaction

(Ar⁺ • ) +  = (Ar⁺ • 2)

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

(Ar⁺ • 10) +  = (Ar⁺ • 11)

By formula: (Ar⁺ • 10Ar) + Ar = (Ar⁺ • 11Ar)

(Ar⁺ • 9) +  = (Ar⁺ • 10)

By formula: (Ar⁺ • 9Ar) + Ar = (Ar⁺ • 10Ar)

(Ar⁺ • 3) +  = (Ar⁺ • 4)

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

(Ar⁺ • 4) +  = (Ar⁺ • 5)

By formula: (Ar⁺ • 4Ar) + Ar = (Ar⁺ • 5Ar)

(Ar⁺ • 5) +  = (Ar⁺ • 6)

By formula: (Ar⁺ • 5Ar) + Ar = (Ar⁺ • 6Ar)

(Ar⁺ • 6) +  = (Ar⁺ • 7)

By formula: (Ar⁺ • 6Ar) + Ar = (Ar⁺ • 7Ar)

(Ar⁺ • 7) +  = (Ar⁺ • 8)

By formula: (Ar⁺ • 7Ar) + Ar = (Ar⁺ • 8Ar)

(Ar⁺ • 8) +  = (Ar⁺ • 9)

By formula: (Ar⁺ • 8Ar) + Ar = (Ar⁺ • 9Ar)

(Ar⁺ • ) +  = (Ar⁺ • 2)

By formula: (Ar⁺ • CO) + CO = (Ar⁺ • 2CO)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + H₂ = (Ar⁺ • H₂)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + N₂ = (Ar⁺ • N₂)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + CO = (Ar⁺ • CO)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + He = (Ar⁺ • He)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + Ne = (Ar⁺ • Ne)

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

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + Ar = (Ar⁺ • Ar)

(Ar⁺ • ) +  = (Ar⁺ • 2)

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

(Ar⁺ • 2) +  = (Ar⁺ • 3)

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

Free energy of reaction

(Ar⁺ • 3) +  = (Ar⁺ • 4)

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

(Ar⁺ • 4) +  = (Ar⁺ • 5)

By formula: (Ar⁺ • 4Ar) + Ar = (Ar⁺ • 5Ar)

(Ar⁺ • 5) +  = (Ar⁺ • 6)

By formula: (Ar⁺ • 5Ar) + Ar = (Ar⁺ • 6Ar)

(Ar⁺ • 6) +  = (Ar⁺ • 7)

By formula: (Ar⁺ • 6Ar) + Ar = (Ar⁺ • 7Ar)

(Ar⁺ • 7) +  = (Ar⁺ • 8)

By formula: (Ar⁺ • 7Ar) + Ar = (Ar⁺ • 8Ar)

(Ar⁺ • 8) +  = (Ar⁺ • 9)

By formula: (Ar⁺ • 8Ar) + Ar = (Ar⁺ • 9Ar)

(Ar⁺ • 9) +  = (Ar⁺ • 10)

By formula: (Ar⁺ • 9Ar) + Ar = (Ar⁺ • 10Ar)

(Ar⁺ • 10) +  = (Ar⁺ • 11)

By formula: (Ar⁺ • 10Ar) + Ar = (Ar⁺ • 11Ar)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + CO = (Ar⁺ • CO)

(Ar⁺ • ) +  = (Ar⁺ • 2)

By formula: (Ar⁺ • CO) + CO = (Ar⁺ • 2CO)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + H₂ = (Ar⁺ • H₂)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + He = (Ar⁺ • He)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + N₂ = (Ar⁺ • N₂)

Ar⁺ +  = (Ar⁺ • )

By formula: Ar⁺ + Ne = (Ar⁺ • Ne)

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Notes

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Teng and Conway, 1973
Teng, H.H.; Conway, D.C., Ion - Molecule Equilibria in Mixtures of N2 and Ar, J. Chem. Phys., 1973, 59, 5, 2316, https://doi.org/10.1063/1.1680338 . [all data]

Turner and Conway, 1979
Turner, D.L.; Conway, D.C., Study of the 2Ar + Ar2+ = Ar + Ar3+ Reaction, J. Chem. Phys., 1979, 71, 4, 1899, https://doi.org/10.1063/1.438544 . [all data]

Liu and Conway, 1975
Liu, W.F.; Conway, D.C., Ion - Molecule Reactions in Ar at 296, 195, and 77 K, J. Chem. Phys., 1975, 62, 8, 3070, https://doi.org/10.1063/1.430906 . [all data]

Hiraoka and Mori, 1989
Hiraoka, K.; Mori, T., Formation and Stabilities of Cluster Ions Arn+, J. Chem. Phys., 1989, 90, 12, 7143, https://doi.org/10.1063/1.456245 . [all data]

Norwood, Guo, et al., 1989
Norwood, K.; Guo, J.H.; Luo, G.; Ng, C.Y., A Study of Intramolecular Charge Transfer in Mixed Ar/Co Dimer and Trimer Ions Using the Photoion - Photoelectron Coincidence Method, Chem. Phys., 1989, 129, 1, 109, https://doi.org/10.1016/0301-0104(89)80023-0 . [all data]

Shul, Passarella, et al., 1987
Shul, R.J.; Passarella, R.; Upshulte, B.L.; Keesee, R.G.; Castleman, A.W., Thermal Energy Reactions Invoving Ar+ Monomer and Dimer with N2, H2, Xe, and Kr, J. Chem. Phys., 1987, 86, 8, 4446, https://doi.org/10.1063/1.452718 . [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]

Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  T	Temperature
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
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