2(1H)-Quinoxalinone, 3-methyl-
- Formula: C9H8N2O
- Molecular weight: 160.1726
- IUPAC Standard InChI: InChI=1S/C9H8N2O/c1-6-9(12)11-8-5-3-2-4-7(8)10-6/h2-5H,1H3,(H,11,12)
- IUPAC Standard InChIKey: BMIMNRPAEPIYDN-UHFFFAOYSA-N
- CAS Registry Number: 14003-34-0
- 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: 2-Hydroxy-3-methylquinoxaline; 3-Methyl-2-quinoxalone; 2-Quinoxalinol, 3-methyl-; 3-Methyl-2-quinoxalinol; 3-Hydroxy-2-methylquinoxaline; USAF el-7; 3-Methyl-2(1H)-quinoxalinone; 3-methylquinoxalin-2-ol; 2-Methyl-3-hydroxyquinoxaline
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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 by: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 119.7 ± 2.8 | kJ/mol | ME | Monte and Hillesheim, 2000 | Based on data from 375. - 391. K. |
| ΔsubH° | 123.0 ± 4.4 | kJ/mol | C | Ribeiro da Silva, Matos, et al., 2000 |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 117.2 ± 0.4 | 383. | ME | Monte and Hillesheim, 2000 | Based on data from 375. - 391. K. |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Method | Reference |
|---|---|---|---|
| 33.4 | 522.9 | DSC | Monte and Hillesheim, 2000 |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Monte and Hillesheim, 2000
Monte, Manuel J.S.; Hillesheim, Dorothea M.,
Thermodynamic Study on the Sublimation of Six Substituted Quinoxalines,
J. Chem. Eng. Data, 2000, 45, 6, 1088-1092, https://doi.org/10.1021/je0001577
. [all data]
Ribeiro da Silva, Matos, et al., 2000
Ribeiro da Silva, M.A.V.; Matos, M.A.R.; Rio, C.M.A.; Miranda, M.S.; Morais, V.M.F.,
Thermochemical and Theoretical Studies of 2-Hydroxyquinoxaline, 2,3-Dihydroxyquinoxaline, and 2-Hydroxy-3-methylquinoxaline,
J. Phys. Chem. A, 2000, 104, 28, 6644-6648, https://doi.org/10.1021/jp000694y
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
ΔfusH Enthalpy of fusion 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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