3-Methyluracil
- Formula: C5H6N2O2
- Molecular weight: 126.1133
- IUPAC Standard InChI: InChI=1S/C5H6N2O2/c1-7-4(8)2-3-6-5(7)9/h2-3H,1H3,(H,6,9)
- IUPAC Standard InChIKey: VPLZGVOSFFCKFC-UHFFFAOYSA-N
- CAS Registry Number: 608-34-4
- Chemical structure:
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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
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 118.8 ± 3.0 | 382. | TE | Brunetti, Piacente, et al., 2000 | Based on data from 344. to 419. K. |
| 75. ± 8. | 463. | HSA | Nowak, Szczepaniak, et al., 1978 | Based on data from 438. to 498. K. |
Reaction 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: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C5H5N2O2- + =
By formula: C5H5N2O2- + H+ = C5H6N2O2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1519. ± 13. | kJ/mol | IMRB | Lee, 2005 | gas phase |
References
Go To: Top, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Brunetti, Piacente, et al., 2000
Brunetti, Bruno; Piacente, Vincenzo; Portalone, Gustavo,
Sublimation Enthalpies of Some Methyl Derivatives of Uracil from Vapor Pressure Measurements,
J. Chem. Eng. Data, 2000, 45, 2, 242-246, https://doi.org/10.1021/je9902802
. [all data]
Nowak, Szczepaniak, et al., 1978
Nowak, M.J.; Szczepaniak, K.; Barski, A.; Shugar, D.Z.,
Z. Naturforsch. C, 1978, 33C, 876. [all data]
Lee, 2005
Lee, J.K.,
Insights into nucleic acid reactivity through gas-phase experimental and computational studies,
Int. J. Mass Spectrom., 2005, 240, 3, 261-272, https://doi.org/10.1016/j.ijms.2004.09.020
. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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