Guanine

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Condensed phase 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 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
Δfsolid-183.9 ± 0.84kJ/molCcbStiehler and Huffman, 1935Reanalyzed by Cox and Pilcher, 1970, Original value = -188.7 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Δcsolid-2498.2 ± 0.79kJ/molCcbStiehler and Huffman, 1935Reanalyzed by Cox and Pilcher, 1970, Original value = -2497.4 kJ/mol; ALS
Quantity Value Units Method Reference Comment
solid,1 bar160.2J/mol*KN/AStiehler and Huffman, 1935, 2Extrapolation below 90 K, 45.06 J/mol*K.; DH

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
160.7298.Kilday, 1981DH
156.94296.7Stiehler and Huffman, 1935, 2T = 84 to 297 K. Value is unsmoothed experimental datum.; DH

References

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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]

Kilday, 1981
Kilday, M.V., Enthalpies of solution of the nucleic acid bases. 6. Guanine in aqueous HCl and NaOH, and guanine hydrochlorides in aqueous HCl, J. Res., 1981, NBS 86, 367-381. [all data]


Notes

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