Butanedioic acid, methylene-, dimethyl ester


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

De-protonation reactions

C7H9O4- + Hydrogen cation = Butanedioic acid, methylene-, dimethyl ester

By formula: C7H9O4- + H+ = C7H10O4

Quantity Value Units Method Reference Comment
Δr348.4 ± 4.0kcal/molIMRBChou, Dahlke, et al., 1993gas phase; Acid: CH2=C(CO2Me)CH2CO2Me. Between MeSH, tBuSH.

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director


Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center
NIST MS number 352593

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Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillaryUltra-1100.1061.Herrmann, Dufka, et al., 198625. m/0.20 mm/0.32 μm, N2
CapillaryUltra-1125.1059.Herrmann, Dufka, et al., 198625. m/0.20 mm/0.32 μm, N2
CapillaryUltra-1150.1057.Herrmann, Dufka, et al., 198625. m/0.20 mm/0.32 μm, N2
CapillaryUltra-175.1065.Herrmann, Dufka, et al., 198625. m/0.20 mm/0.32 μm, N2

Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryVF-5MS1096.5Tret'yakov, 200830. m/0.25 mm/0.25 μm, He; Program: Multi-step temperature program; T(initial)=60C; T(final)=270C

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.

Chou, Dahlke, et al., 1993
Chou, P.K.; Dahlke, G.D.; Kass, S.R., Unimolecular Rearrangements of Carbanions in the Gas Phase .2. Cyclopropyl Anions, J. Chem. Soc. Chem. Comm., 1993, 115, 1, 315, https://doi.org/10.1021/ja00054a045 . [all data]

Herrmann, Dufka, et al., 1986
Herrmann, F.; Dufka, O.; Churacek, J., Fused-Silica Capillary Gas Chromatography-Mass Spectrometry of Some Dicarboxylic Acids Present in Condensation-Type Polymers I. Dimethyl Esters, J. Chromatogr., 1986, 360, 79-88, https://doi.org/10.1016/S0021-9673(00)91653-4 . [all data]

Tret'yakov, 2008
Tret'yakov, K.V., Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2008. [all data]


Notes

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