O2C(CH2)6CO2 dianion

• Formula: C₈H₁₂O₄^-2
• Molecular weight: 172.1796
• CAS Registry Number: 764-55-6
• Information on this page:
  • Gas phase ion energetics data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
• Options:
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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

Electron affinity of neutral species

Protonation reactions

C₈H₁₂O₄^-2 +  = C₈H₁₃O₄^-2

By formula: C₈H₁₂O₄^-2 + H⁺ = C₈H₁₃O₄^-2

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

C₈H₁₂O₄^-2 +  = C₈H₁₃O₄^-2

By formula: C₈H₁₂O₄^-2 + H⁺ = C₈H₁₃O₄^-2

C₈H₁₂O₄^-2 +  = (C₈H₁₂O₄^-2 • )

By formula: C₈H₁₂O₄^-2 + H₂O = (C₈H₁₂O₄^-2 • H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

(C₈H₁₂O₄^-2 • ) +  = (C₈H₁₂O₄^-2 • 2)

By formula: (C₈H₁₂O₄^-2 • H₂O) + H₂O = (C₈H₁₂O₄^-2 • 2H₂O)

(C₈H₁₂O₄^-2 • 2) +  = (C₈H₁₂O₄^-2 • 3)

By formula: (C₈H₁₂O₄^-2 • 2H₂O) + H₂O = (C₈H₁₂O₄^-2 • 3H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

(C₈H₁₂O₄^-2 • 3) +  = (C₈H₁₂O₄^-2 • 4)

By formula: (C₈H₁₂O₄^-2 • 3H₂O) + H₂O = (C₈H₁₂O₄^-2 • 4H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

(C₈H₁₂O₄^-2 • 4) +  = (C₈H₁₂O₄^-2 • 5)

By formula: (C₈H₁₂O₄^-2 • 4H₂O) + H₂O = (C₈H₁₂O₄^-2 • 5H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

(C₈H₁₂O₄^-2 • 5) +  = (C₈H₁₂O₄^-2 • 6)

By formula: (C₈H₁₂O₄^-2 • 5H₂O) + H₂O = (C₈H₁₂O₄^-2 • 6H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

References

Go To: Top, Gas phase ion energetics 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.

Yang, Fu, et al., 2004
Yang, X.; Fu, Y.J.; Wang, X.B.; Slavicek, P.; Mucha, M.; Jungwirth, P.; Wang, L.S., Solvent-mediated folding of a doubly charged anion, J. Am. Chem. Soc., 2004, 126, 3, 876-883, https://doi.org/10.1021/ja038108c . [all data]

Ding, Wang, et al., 1998
Ding, C.F.; Wang, X.B.; Wang, L.S., Photoelectron spectroscopy of doubly charged anions: Intramolecular Coulomb repulsion and solvent stabilization, J. Phys. Chem. A, 1998, 102, 45, 8633-8636, https://doi.org/10.1021/jp982698x . [all data]

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]

Notes

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• Symbols used in this document:
  

  EAneutral	Electron affinity of neutral species
  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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