Cyclopropane

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Reaction thermochemistry data

Go To: Top, References, Notes

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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C3H5- + Hydrogen cation = Cyclopropane

By formula: C3H5- + H+ = C3H6

Quantity Value Units Method Reference Comment
Δr410. ± 3.kcal/molAVGN/AAverage of 5 out of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Δr401. ± 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
Δr-25.77 ± 0.32kcal/molCmLacher, Kianpour, et al., 1957gas phase; ALS
Δr-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
Δr18.3 ± 4.0kcal/molEqkBenson and Amano, 1962gas phase; ALS

References

Go To: Top, Reaction thermochemistry data, Notes

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

Go To: Top, Reaction thermochemistry data, References