S2 anion

• Formula: S₂^-
• Molecular weight: 64.131
• CAS Registry Number: 12185-15-8
• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Ion clustering data
  • Constants of diatomic molecules
• Options:
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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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

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Individual Reactions

(S₂^- • ) +  = (S₂^- • 2)

By formula: (S₂^- • CS₂) + CS₂ = (S₂^- • 2CS₂)

S₂^- +  = HS₂

By formula: S₂^- + H⁺ = HS₂

S₂^- +  = (S₂^- • )

By formula: S₂^- + CS₂ = (S₂^- • CS₂)

(S₂^- • 4294967295) +  = S₂^-

By formula: (S₂^- • 4294967295S) + S = S₂^-

S₂^- = CS₄^-

By formula: S₂^- = CS₄^-

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 compiled by: John E. Bartmess

Protonation reactions

S₂^- +  = HS₂

By formula: S₂^- + H⁺ = HS₂

References

Go To: Top, Reaction thermochemistry data, 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.

Hiraoka, Fujimaki, et al., 1994
Hiraoka, K.; Fujimaki, S.; Aruga, K.; Yamabe, S., Frontier-Controlled Structures of the Gas-Phase A+-(CS2)n Clusters ,A+- = S2+, CS2+, S2-, and CS2-, J. Phys. Chem., 1994, 98, 7, 1802, https://doi.org/10.1021/j100058a014 . [all data]

Moran and Ellison, 1988
Moran, S.; Ellison, G.B., Photoelectron Spectroscopy of Sulfur Ions, J. Phys. Chem., 1988, 92, 7, 1794, https://doi.org/10.1021/j100318a021 . [all data]

Goodings, Bohme, et al., 1986
Goodings, J.M.; Bohme, D.K.; Elguindi, K.; Fox, A., Sulphur Anion Chemistry in Hydrocarbon Flames with H₂S, OCS, and SO₂ Additives, Can. J. Chem., 1986, 64, 4, 689, https://doi.org/10.1139/v86-110 . [all data]

Hiraoka, Fujimaki, et al., 1994, 2
Hiraoka, K.; Fujimaki, S.; Aruga, K., Frontier-controlled Structures of the Gas Phas Clusters A+/-(CS2)n, A+/- = S2+, CS2+, S2-, and CS2-, J. Phys. Chem. (1994), 1994, 98, 7, 1802-1809, https://doi.org/10.1021/j100058a014 . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  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
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