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-35.1 ± 0.84kJ/molEqkWiberg and Hao, 1991Heat of hydration; ALS
Δfgas-34.8kJ/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 (J/mol*K) Temperature (K) Reference Comment
102.97273.15McCullough 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
109.96298.15
110.50300.
138.91400.
164.85500.
187.11600.
206.10700.
222.38800.
236.48900.
248.661000.
259.241100.
268.401200.
276.351300.
283.301400.
289.321500.

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
116.15 ± 0.35320.66Scott D.W., 1949GT
128.37 ± 0.39362.51
140.62 ± 0.42407.11
153.13 ± 0.46453.41
165.35 ± 0.50502.21

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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