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Neopentane

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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
Deltafliquid-190.3 ± 0.63kJ/molCcbGood, 1970ALS
Deltafliquid-188.2 ± 1.0kJ/molCcbProsen and Rossini, 1945ALS
Quantity Value Units Method Reference Comment
Deltacliquid-3492.4 ± 0.59kJ/molCcbGood, 1970Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -3492.2 ± 0.50 kJ/mol; Corresponding «DELTA»fliquid = -190.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-3494.4 ± 1.0kJ/molCcbProsen and Rossini, 1945Corresponding «DELTA»fliquid = -188.2 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid216.81J/mol*KN/AEnokida, Shinoda, et al., 1969At normal boiling point.; DH
liquid218.8J/mol*KN/AAston and Messerly, 1936DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
153.09259.93Enokida, Shinoda, et al., 1969T = 4 to 260 K. Value is unsmoothed experimental datum.; DH
163.89278.92Aston and Messerly, 1936T = 13 to 283 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.

Good, 1970
Good, W.D., The enthalpies of combustion and formation of the isomeric pentanes, J. Chem. Thermodyn., 1970, 2, 237-244. [all data]

Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D., Heats of combustion and formation of the paraffin hydrocarbons at 25° C, J. Res. NBS, 1945, 263-267. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Enokida, Shinoda, et al., 1969
Enokida, H.; Shinoda, T.; Mashiko, Y., Thermodynamic properties of neopentane from 4K to the melting point and comparison with spectroscopic data, Bull. Chem. Soc. Japan, 1969, 42, 84-91. [all data]

Aston and Messerly, 1936
Aston, J.G.; Messerly, G.H., Heat capacities and entropies of organic compounds. II. Thermal and vapor pressure data for tetramethylmethane from 13.22°K to the boiling point. The entropy from its Raman spectrum, J. Am. Chem. Soc., 1936, 58, 2354-2361. [all data]


Notes

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