6H-Purin-6-one, 1,7-dihydro-
- Formula: C5H4N4O
- Molecular weight: 136.1115
- IUPAC Standard InChIKey: FDGQSTZJBFJUBT-UHFFFAOYSA-N
- CAS Registry Number: 68-94-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Hypoxanthine; Purin-6(1H)-one; Purin-6(3H)-one; Purin-6-ol; Sarcine; Sarkin; Sarkine; 3H-Purin-6-ol; 6-Hydroxy-1H-purine; 6-Hydroxypurine; 6-Oxopurine; 9H-Purin-6(1H)-one; 9H-Purin-6-ol; 1,7-Dihydro-6H-purine-6-one; 1,7-Dihydro-6H-purin-6-one; HX; 6(1H)-Purinone; Purine-6-ol; 6H-Purin-6-one, 1,9-dihydro-; Hypoxanthine enol; NSC 14665
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Condensed phase thermochemistry data
Go To: Top, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -26.47 ± 0.18 | kcal/mol | Ccb | Stiehler and Huffman, 1935 | Reanalyzed by Cox and Pilcher, 1970, Original value = -27.63 kcal/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -580.42 ± 0.17 | kcal/mol | Ccb | Stiehler and Huffman, 1935 | Reanalyzed by Cox and Pilcher, 1970, Original value = -580.20 ± 0.14 kcal/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 34.80 | cal/mol*K | N/A | Stiehler and Huffman, 1935, 2 | Extrapolation below 90 K, 45.56 J/mol*K.; DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
32.151 | 298.5 | Stiehler and Huffman, 1935, 2 | T = 85 to 298 K. Value is unsmoothed experimental datum.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Stiehler and Huffman, 1935
Stiehler, R.D.; Huffman, H.M.,
Thermal data. IV. The heats of combustion of adenine, hypoxanthine, guanine, xanthine, uric acid, allantoin and alloxan,
J. Am. Chem. Soc., 1935, 57, 1734-1740. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Stiehler and Huffman, 1935, 2
Stiehler, R.D.; Huffman, H.M.,
Thermal data. V. The heat capacities, entropies and free energies of adenine, hypoxanthine, guanine, xanthine, uric acid, allantoin and alloxan,
J. Am. Chem. Soc., 1935, 57, 1741-1743. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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