2,5-Furandione, 3,4-dimethyl-
- Formula: C6H6O3
- Molecular weight: 126.1100
- IUPAC Standard InChI: InChI=1S/C6H6O3/c1-3-4(2)6(8)9-5(3)7/h1-2H3
- IUPAC Standard InChIKey: MFGALGYVFGDXIX-UHFFFAOYSA-N
- CAS Registry Number: 766-39-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Maleic anhydride, dimethyl-; Dimethylmaleic acid anhydride; Dimethylmaleic anhydride; Pyrocinchonic anhydride; 2,3-Dimethylmaleic anhydride; 3,4-Dimethyl-2,5-furandione; α,β-Dimethylmaleic anhydride; Anhydride of dimethylmaleic acid; 3,4-Dimethyl-2,5-furanedione; NSC 92512
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Condensed phase thermochemistry 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | -574.5 | kJ/mol | Ccb | Stern and Klebs, 1933 | Heat of combustion at 288 K |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -2637.2 ± 2.5 | kJ/mol | Ccb | Stern and Klebs, 1933 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2644. kJ/mol; Heat of combustion at 288 K; Corresponding ΔfHºsolid = -581.37 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, References, Notes
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 determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.162 ± 0.087 | TDEq | Paul and Kebarle, 1989 | ΔGea(423 K) = -26.2±1 kcal/mol, ΔS = -2±3 eu |
References
Go To: Top, Condensed phase thermochemistry data, 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.
Stern and Klebs, 1933
Stern, A.; Klebs, G.,
Calorimetrische bestimmungen bei mehrkernigen pyrrolderivaten. IV. 1. Experimentelle daten fur einige porphyrine, chlorine, phaophorbide and purpurine,
Ann. Chim., 1933, 505, 295-306. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Paul and Kebarle, 1989
Paul, G.; Kebarle, P.,
Electron Affinities of Cyclic Unsaturated Dicarbonyls: Maleic Anhydrides, Maleimides, and Cyclopentendione,
J. Am. Chem. Soc., 1989, 111, 2, 464, https://doi.org/10.1021/ja00184a009
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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