2-Methyl-1-butene

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Gas 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
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas-8.39 ± 0.20kcal/molEqkWiberg and Hao, 1991Heat of hydration; ALS
Δfgas-8.32kcal/molN/AGood and Smith, 1979Value computed using ΔfHliquid° value of -60.96±0.84 kj/mol from Good and Smith, 1979 and ΔvapH° value of 26.19 kj/mol from missing citation.; DRB

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
24.610273.15McCullough J.P., 1959Results of more recent statistical calculation [ Durig J.R., 1980] are different from recommended and experimental values up to 3 J/mol*K for S(T) and Cp(T).; GT
26.281298.15
26.410300.
33.200400.
39.400500.
44.720600.
49.259700.
53.150800.
56.520900.
59.4311000.
61.9601100.
64.1491200.
66.0491300.
67.7101400.
69.1491500.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
27.761 ± 0.084320.66Scott D.W., 1949GT
30.681 ± 0.093362.51
33.61 ± 0.10407.11
36.60 ± 0.11453.41
39.52 ± 0.12502.21

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.

Wiberg and Hao, 1991
Wiberg, K.B.; Hao, S., Enthalpies of hydration of alkenes. 4. Formation of acyclic tert-alcohols, J. Org. Chem., 1991, 56, 5108-5110. [all data]

Good and Smith, 1979
Good, W.D.; Smith, N.K., The enthalpies of combustion of the isomeric pentenes in the liquid state. A warning to combustion calorimetrists about sample drying, J. Chem. Thermodyn., 1979, 11, 111-118. [all data]

McCullough J.P., 1959
McCullough J.P., Thermodynamic properties, vibrational assignment and rotational conformations of 2-methyl-1-butene, J. Am. Chem. Soc., 1959, 81, 1331-1334. [all data]

Durig J.R., 1980
Durig J.R., Torsional spectra of molecules with two internal C3v rotors. 19. Vibrational spectra, torsional potential functions, and conformational and thermodynamic properties of 2-methyl-1-butene, J. Phys. Chem., 1980, 84, 3554-3561. [all data]

Scott D.W., 1949
Scott D.W., Thermodynamic properties of three isomeric pentenes, J. Am. Chem. Soc., 1949, 71, 2767-2773. [all data]


Notes

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