Sulfate

• Formula: O₄S^-2
• Molecular weight: 96.064
• IUPAC Standard InChI: InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2 Copy

  
• IUPAC Standard InChIKey: QAOWNCQODCNURD-UHFFFAOYSA-L Copy
• CAS Registry Number: 14808-79-8
• Chemical structure:
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• Information on this page:
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
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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 as indicated in comments:
B - John E. Bartmess
M - 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

 + 6 = H₁₂O₁₀S^-2

By formula: O₄S^-2 + 6H₂O = H₁₂O₁₀S^-2

 + 12 = H₂₄O₁₆S^-2

By formula: O₄S^-2 + 12H₂O = H₂₄O₁₆S^-2

 + 13 = H₂₆O₁₇S^-2

By formula: O₄S^-2 + 13H₂O = H₂₆O₁₇S^-2

 + 14 = H₂₈O₁₈S^-2

By formula: O₄S^-2 + 14H₂O = H₂₈O₁₈S^-2

 + 15 = H₃₀O₁₉S^-2

By formula: O₄S^-2 + 15H₂O = H₃₀O₁₉S^-2

 + 16 = H₃₂O₂₀S^-2

By formula: O₄S^-2 + 16H₂O = H₃₂O₂₀S^-2

 + 17 = H₃₄O₂₁S^-2

By formula: O₄S^-2 + 17H₂O = H₃₄O₂₁S^-2

 + 18 = H₃₆O₂₂S^-2

By formula: O₄S^-2 + 18H₂O = H₃₆O₂₂S^-2

 + 19 = H₃₈O₂₃S^-2

By formula: O₄S^-2 + 19H₂O = H₃₈O₂₃S^-2

( • 5) +  = ( • 6)

By formula: (O₄S^-2 • 5H₂O) + H₂O = (O₄S^-2 • 6H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

( • 6) +  = ( • 7)

By formula: (O₄S^-2 • 6H₂O) + H₂O = (O₄S^-2 • 7H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

( • 7) +  = ( • 8)

By formula: (O₄S^-2 • 7H₂O) + H₂O = (O₄S^-2 • 8H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

( • 8) +  = ( • 9)

By formula: (O₄S^-2 • 8H₂O) + H₂O = (O₄S^-2 • 9H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

( • 9) +  = ( • 10)

By formula: (O₄S^-2 • 9H₂O) + H₂O = (O₄S^-2 • 10H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

( • 10) +  = ( • 11)

By formula: (O₄S^-2 • 10H₂O) + H₂O = (O₄S^-2 • 11H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

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.

Blades, Klassen, et al., 1995
Blades, A.T.; Klassen, J.S.; Kebarle, P., Free Energies of Hydration in the Gas Phase on the Anions of Some Oxo Acids of C, N, S, P, Cl and I, J. Am. Chem. Soc., 1995, 117, 42, 10563, https://doi.org/10.1021/ja00147a019 . [all data]

Blades and Kebarle, 2005
Blades, A.T.; Kebarle, P., Sequential hydration energies of the sulfate ion, from determinations of the equilibrium constants for the gas-phase reactions: SO4(H2O)(n)(2-) = SO4(H2O)(n-1)(2-)+H2O, J. Phys. Chem. A, 2005, 109, 37, 8293-8298, https://doi.org/10.1021/jp0540353 . [all data]

Notes

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• Symbols used in this document:
  

  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

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