2-Butene, 2,3-dimethyl-

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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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas-16.80 ± 0.36kcal/molEqkWiberg and Hao, 1991Heat of hydration; ALS
Δfgas-16.35 ± 0.35kcal/molEqkRodgers and Wu, 1971Heat of isomerization; ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
32.340 ± 0.065334.20Scott D.W., 1955GT
33.939 ± 0.067355.25
36.960 ± 0.074393.20
40.069 ± 0.081433.20
43.100 ± 0.086473.20

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
27.710273.15Scott D.W., 1955Recommended results of statistical thermodynamics calculation are in good agreement with experimental data.; GT
29.541298.15
29.680300.
37.481400.
45.041500.
51.781600.
57.670700.
62.780800.
67.249900.
71.1401000.
74.5511100.
77.5101200.
80.0791300.
82.3301400.
84.3091500.

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]

Rodgers and Wu, 1971
Rodgers, A.S.; Wu, M.-C.R., Thermochemistry of the gas-phase iodine catalyzed isomerization: 2,3-dimethyl-1-butene = 2,3-dimethyl-2-butene, J. Chem. Thermodyn., 1971, 3, 591-597. [all data]

Scott D.W., 1955
Scott D.W., 2,3-Dimethyl-2-butene: thermodynamic properties in the solid, liquid and vapor states, J. Am. Chem. Soc., 1955, 77, 4993-4998. [all data]


Notes

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