1H-Isoindole-1,3(2H)-dione, 2-methyl-
- Formula: C9H7NO2
- Molecular weight: 161.1574
- IUPAC Standard InChI: InChI=1S/C9H7NO2/c1-10-8(11)6-4-2-3-5-7(6)9(10)12/h2-5H,1H3
- IUPAC Standard InChIKey: ZXLYYQUMYFHCLQ-UHFFFAOYSA-N
- CAS Registry Number: 550-44-7
- 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: Phthalimide, N-methyl-; N-Methylphthalimide; Methylphthalimide
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Gas 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°gas | -233.9 ± 2.2 | kJ/mol | Ccb | Roux, Jimenez, et al., 1997 |
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 | -325.0 ± 2.1 | kJ/mol | Ccb | Roux, Jimenez, et al., 1997 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -4217.0 ± 1.8 | kJ/mol | Ccb | Roux, Jimenez, et al., 1997 |
Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 559.2 | K | N/A | Weast and Grasselli, 1989 | BS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 91.1 ± 0.5 | kJ/mol | V | Roux, Jimenez, et al., 1997 | ALS |
| ΔsubH° | 91.1 ± 0.5 | kJ/mol | ME | Roux, Jimenez, et al., 1997 | Based on data from 298. to 316. K.; AC |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 91.1 ± 0.5 | 307. | ME | Roux, Jimenez, et al., 1997 | Based on data from 298. to 316. K.; AC |
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
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5MS | 1425. | Kim, Abd El-Aty, et al., 2006 | 30. m/0.25 mm/0.25 μm, He, 50. C @ 4. min, 5. K/min, 280. C @ 10. min |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Roux, Jimenez, et al., 1997
Roux, M.V.; Jimenez, P.; Martin-Luengo, M.A.; Davalos, J.Z.; Sun, Z.; Hosmane, R.S.; Liebman, J.F.,
The elusive antiaromaticity of Maleimides and maleic anhydride: Enthalpies of formation of N-methylmaleimide, N-methylsuccinimide, N-Methylphtalimide, and N-benzoyl-N-methylbenzamide,
J. Org. Chem., 1997, 62, 2732-2737. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Kim, Abd El-Aty, et al., 2006
Kim, M.R.; Abd El-Aty, A.M.; Kim, I.S.; Shim, J.H.,
Determination of volatile flavor components in danggui cultivars by solvent free injection and hydrodistillation followed by gas chromatographic-mass spectrometric analysis,
J. Chromatogr. A, 2006, 1116, 1-2, 259-264, https://doi.org/10.1016/j.chroma.2006.03.060
. [all data]
Notes
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- Symbols used in this document:
Tboil Boiling point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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