Propanedioic acid

• Formula: C₃H₄O₄
• Molecular weight: 104.0615
• IUPAC Standard InChI: InChI=1S/C3H4O4/c4-2(5)1-3(6)7/h1H2,(H,4,5)(H,6,7) Copy

  
• IUPAC Standard InChIKey: OFOBLEOULBTSOW-UHFFFAOYSA-N Copy
• CAS Registry Number: 141-82-2
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Isotopologues:
  • [2H2]malonic [2H2]acid
• Other names: Malonic acid; Carboxyacetic acid; Dicarboxymethane; Methanedicarboxylic acid; CH2(COOH)2; USAF EK-695; Kyselina malonova; Methanedicarbonic acid; NSC 8124
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• Information on this page:
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Henry's Law data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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 as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

De-protonation reactions

C₃H₃O₄^- +  =

By formula: C₃H₃O₄^- + H⁺ = C₃H₄O₄

References

Go To: Top, 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.

Ajo, Ciliberto, et al., 1980
Ajo, D.; Ciliberto, E.; Fragala, I.; Granozzi, G., Lone-pair interactions in the photoelectron spectra of dicarboxylic acids: Malonic acid its α-alkyl derivatives, J. Mol. Struct., 1980, 62, 189. [all data]

Kumar, Prabhakar, et al., 2005
Kumar, M.R.; Prabhakar, S.; Nagaveni, V.; Vairamani, M., Estimation of gas-phase acidities of a series of dicarboxylic acids by the kinetic method, Rapid Commun. Mass Spectrom., 2005, 19, 8, 1053-1057, https://doi.org/10.1002/rcm.1888 . [all data]

Notes

Go To: Top, 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

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