2-Amino-5-nitropyridine
- Formula: C5H5N3O2
- Molecular weight: 139.1121
- IUPAC Standard InChI: InChI=1S/C5H5N3O2/c6-5-2-1-4(3-7-5)8(9)10/h1-3H,(H2,6,7)
- IUPAC Standard InChIKey: UGSBCCAHDVCHGI-UHFFFAOYSA-N
- CAS Registry Number: 4214-76-0
- 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-Pyridinamine, 5-nitro-; Pyridine, 2-amino-5-nitro-; 5-Nitro-2-aminopyridine; 5-nitropyrimidin-2-ylamine
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Phase change data
Go To: Top, Gas phase ion energetics 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: William E. Acree, Jr., James S. Chickos
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.98 | 461.4 | AC | Shi, Tan, et al., 2007 | Based on data from 80. to 395. K. |
Gas phase ion energetics data
Go To: Top, 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: John E. Bartmess
De-protonation reactions
C5H4N3O2- + =
By formula: C5H4N3O2- + H+ = C5H5N3O2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 341.6 ± 2.9 | kcal/mol | G+TS | Breuker, Knochenmuss, et al., 1999 | gas phase; Acid: 2-amino-5-nitropyridine |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 334.3 ± 2.7 | kcal/mol | IMRB | Breuker, Knochenmuss, et al., 1999 | gas phase; Acid: 2-amino-5-nitropyridine |
References
Go To: Top, Phase change 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.
Shi, Tan, et al., 2007
Shi, Quan; Tan, Zhi-Cheng; Di, You-Ying; Tong, Bo; Wang, Shao-Xu; Li, Yan-Sheng,
Thermodynamic studies of crystalline 2-amino-5-nitropyridine (C5H5N3O2),
Thermochimica Acta, 2007, 463, 1-2, 6-9, https://doi.org/10.1016/j.tca.2007.04.006
. [all data]
Breuker, Knochenmuss, et al., 1999
Breuker, K.; Knochenmuss, R.; Zenobi, R.,
Gas-phase basicities of deprotonated matrix-assisted laser desorption/ionization matrix molecules,
Int. J. Mass Spectrom., 1999, 184, 1, 25-38, https://doi.org/10.1016/S1387-3806(98)14200-8
. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔfusH Enthalpy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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