ClCH2CO2 anion

• Formula: C₂H₂ClO₂^-
• Molecular weight: 93.490
• IUPAC Standard InChI: InChI=1S/C2H3ClO2/c3-1-2(4)5/h1H2,(H,4,5)/p-1 Copy

  
• IUPAC Standard InChIKey: FOCAUTSVDIKZOP-UHFFFAOYSA-M Copy
• CAS Registry Number: 14526-03-5
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Information on this page:
  • Gas phase ion energetics data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
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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

 +  =

By formula: C₂H₂ClO₂^- + H⁺ = C₂H₃ClO₂

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

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Clustering reactions

 +  = ( • )

By formula: C₂H₂ClO₂^- + H₂O = (C₂H₂ClO₂^- • H₂O)

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.

Yu, Lina, et al., 2007
Yu, W.B.; Lina, Z.J.; Ding, C.F., Electronic structures and electron detachment energies of halogen substituted acetate anions, XCH2COO- (X=F, Cl, Br), J. Chem. Phys., 2007, 126, 11, 114301, https://doi.org/10.1063/1.2646665 . [all data]

Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P., Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria, Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092 . [all data]

Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W., Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities, J. Am. Chem. Soc., 1981, 103, 4017. [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [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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