Formic acid dimer

Formula: C₂H₄O₄
Molecular weight: 92.0508
IUPAC Standard InChI: InChI=1S/C2H4O4/c1-3-7-5-2-6-8-4-1/h1-2H
IUPAC Standard InChIKey: MWRSLEDBDQCVGX-UHFFFAOYSA-N
CAS Registry Number: 14523-98-9
Chemical structure:
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Gas phase ion energetics data

Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV)	Method	Reference	Comment
11.2	PE	Kimura, Katsumata, et al., 1981	Vertical value
11.3	PE	Thomas, 1972	Vertical value

References

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Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Thomas, 1972
Thomas, R.K., Photoelectron spectroscopy of hydrogen-bonded systems: spectra of monomers, dimers and mixed complexes of carboxylic acides, Proc. R. Soc. London A:, 1972, 331, 249. [all data]

Notes

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Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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