Pyrazine, 2,3-dimethyl-
- Formula: C6H8N2
- Molecular weight: 108.1411
- IUPAC Standard InChIKey: OXQOBQJCDNLAPO-UHFFFAOYSA-N
- CAS Registry Number: 5910-89-4
- 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: 2,3-Dimethylpyrazine
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 126.0 | kJ/mol | Ccb | Ribeiro da Silva, Morais, et al., 1996 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | 73.4 ± 2.0 | kJ/mol | Ccb | Ribeiro da Silva, Morais, et al., 1996 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -3577.8 ± 1.7 | kJ/mol | Ccb | Ribeiro da Silva, Morais, et al., 1996 |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 429.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 52.6 ± 1.7 | kJ/mol | C | Morais, Miranda, et al., 2003 | AC |
ΔvapH° | 52.6 | kJ/mol | E | Ribeiro da Silva, Morais, et al., 1996 | ALS |
ΔvapH° | 52.6 | kJ/mol | N/A | Ribeiro da Silva, Morais, et al., 1996 | DRB |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ribeiro da Silva, Morais, et al., 1996
Ribeiro da Silva, M.A.V.; Morais, V.M.F.; Matos, M.A.R.; Rio, C.M.A.; Piedade, G.M.G.S.,
Thermochemical and theoretical study of some methyldiazines,
Struct. Chem., 1996, 7, 329-336. [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]
Morais, Miranda, et al., 2003
Morais, Victor M.F.; Miranda, Margarida S.; Matos, M. Agostinha R.,
Thermochemical study of the ethylpyridine and ethylpyrazine isomers,
Org. Biomol. Chem., 2003, 1, 23, 4329-712, https://doi.org/10.1039/b308097h
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.