Sulfur dioxide, protonated

• Formula: HO₂S⁺
• Molecular weight: 65.071
• Information on this page:
  • Reaction thermochemistry data
  • References
  • Notes
• Other data available:
  • Ion clustering data
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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 by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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Individual Reactions

HO₂S⁺ +  = (HO₂S⁺  )

By formula: HO₂S⁺ + O₂S = (HO₂S⁺  O₂S)

Quantity	Value	Units	Method	Reference	Comment
rH°	89.1	kJ/mol	PHPMS	Szulejko and McMahon, 1992	gas phase
rH°	97.1	kJ/mol	PHPMS	McMahon and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	108.	J/mol*K	PHPMS	Szulejko and McMahon, 1992	gas phase
rS°	115.	J/mol*K	PHPMS	McMahon and Kebarle, 1986	gas phase

HO₂S⁺ +  = (HO₂S⁺  )

By formula: HO₂S⁺ + CH₃F = (HO₂S⁺  CH₃F)

Quantity	Value	Units	Method	Reference	Comment
rH°	106.	kJ/mol	PHPMS	McMahon and Kebarle, 1986	gas phase; switching reaction(SO2H+)SO2
Quantity	Value	Units	Method	Reference	Comment
rS°	119.	J/mol*K	PHPMS	McMahon and Kebarle, 1986	gas phase; switching reaction(SO2H+)SO2

References

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

Szulejko and McMahon, 1992
Szulejko, J.; McMahon, T.B., personal communication, 1992. [all data]

McMahon and Kebarle, 1986
McMahon, T.B.; Kebarle, P., Strong hydrogen bonding in gas-phase ions: A high pressure mass spectrometric study of formation and energetics of methyl fluoride proton bound dimer, J. Am. Chem. Soc., 1986, 108, 6502. [all data]

Notes

Go To: Top, Reaction thermochemistry data, References

• Symbols used in this document:
  

  rH°	Enthalpy of reaction at standard conditions
  rS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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