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Cyclopropane

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Reaction 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:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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Individual Reactions

C3H5- + Hydrogen cation = Cyclopropane

By formula: C3H5- + H+ = C3H6

Quantity Value Units Method Reference Comment
Deltar410. ± 3.kcal/molAVGN/AAverage of 5 out of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar401. ± 3.kcal/molAVGN/AAverage of 3 out of 6 values; Individual data points

Hydrogen bromide + Cyclopropane = Propane, 1-bromo-

By formula: HBr + C3H6 = C3H7Br

Quantity Value Units Method Reference Comment
Deltar-25.77 ± 0.32kcal/molCmLacher, Kianpour, et al., 1957gas phase; ALS
Deltar-22.69 ± 0.16kcal/molCmLacher, Walden, et al., 1950gas phase; Heat of hydrobromination; ALS

Propane, 1,3-diiodo- = Cyclopropane + Iodine

By formula: C3H6I2 = C3H6 + I2

Quantity Value Units Method Reference Comment
Deltar18.3 ± 4.0kcal/molEqkBenson and Amano, 1962gas phase; ALS

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.

Lacher, Kianpour, et al., 1957
Lacher, J.R.; Kianpour, A.; Park, J.D., Reaction heats of organic halogen compounds. X. Vapor phase heats of hydrobromination of cyclopropane and propylene, J. Phys. Chem., 1957, 61, 1124-1125. [all data]

Lacher, Walden, et al., 1950
Lacher, J.R.; Walden, C.H.; Lea, K.R.; Park, J.D., Vapor phase heats of hydrobromination of cyclopropane and propylene, J. Am. Chem. Soc., 1950, 72, 331-333. [all data]

Benson and Amano, 1962
Benson, S.W.; Amano, A., Thermodynamics of iodine addition to ethylene, propylene, and cyclopropane, J. Chem. Phys., 1962, 36, 3464-3471. [all data]


Notes

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