1H-Pyrrole-2-carboxylic acid
- Formula: C5H5NO2
- Molecular weight: 111.0987
- IUPAC Standard InChI: InChI=1S/C5H5NO2/c7-5(8)4-2-1-3-6-4/h1-3,6H,(H,7,8)
- IUPAC Standard InChIKey: WRHZVMBBRYBTKZ-UHFFFAOYSA-N
- CAS Registry Number: 634-97-9
- 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: Pyrrole-2-carboxylic acid; Minalin; Minaline; PCA
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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° | 24.1 ± 0.2 | kcal/mol | ME | Santos and Silva, 2009 | Based on data from 331. to 353. K. |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 23.6 ± 0.2 | 342. | ME | Santos and Silva, 2009 | Based on data from 331. to 353. K. |
| 30.31 | 352. | ME | Bradley and Care, 1953 | Based on data from 350. to 354. K. See also Jones, 1960. |
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.
Santos and Silva, 2009
Santos, Ana Filipa L.O.M.; Silva, Manuel A.V. Ribeiro da,
Experimental and Computational Study on the Molecular Energetics of 2-Pyrrolecarboxylic Acid and 1-Methyl-2-pyrrolecarboxylic Acid,
J. Phys. Chem. A, 2009, 113, 35, 9741-9750, https://doi.org/10.1021/jp905375h
. [all data]
Bradley and Care, 1953
Bradley, R.S.; Care, A.D.,
348. The vapour pressure and lattice energy of hydrogen-bonded crystals. Part III. 2-Thenoic, 2-furoic, and pyrrole-2-carboxylic acids,
J. Chem. Soc., 1953, 1688, https://doi.org/10.1039/jr9530001688
. [all data]
Jones, 1960
Jones, A.H.,
Sublimation Pressure Data for Organic Compounds.,
J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
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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