Cyclopropane, methylmethylene-
- Formula: C5H8
- Molecular weight: 68.1170
- IUPAC Standard InChI: InChI=1S/C5H8/c1-4-3-5(4)2/h5H,1,3H2,2H3
- IUPAC Standard InChIKey: PKCSMQZDZICOIA-UHFFFAOYSA-N
- CAS Registry Number: 18631-84-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: 1-Methyl-2-methylenecyclopropane; 2-Methylmethylenecyclopropane
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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 by: 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
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| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -160.3 ± 0.50 | kJ/mol | Chyd | Turner, Goebel, et al., 1968 | liquid phase; solvent: Acetic acid |
| ΔrH° | -159. ± 4.2 | kJ/mol | Chyd | Chesick, 1963 | liquid phase; solvent: Acetic acid |
=
By formula: C5H8 = C5H8
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -2.4 ± 0.84 | kJ/mol | Eqk | Chesick, 1963 | gas phase |
Gas Chromatography
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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SPB-1 | 575.62 | LECO Corporation, 2003 | 30. m/0.25 mm/0.25 μm, 40. C @ 2. min, 10. K/min, 250. C @ 2. min |
References
Go To: Top, Reaction thermochemistry data, Gas Chromatography, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Turner, Goebel, et al., 1968
Turner, R.B.; Goebel, P.; Mallon, B.J.; Doering, W.E.; Coburn, J.F., Jr.; Pomerantz, M.,
Heats of hydrogenation. VIII. Compounds with three- and four-membered rings,
J. Am. Chem. Soc., 1968, 90, 4315-4322. [all data]
Chesick, 1963
Chesick, J.P.,
Kinetics of the thermal interconversion of 2-methylmethylenecyclopropane and ethylidenecyclopropane,
J. Am. Chem. Soc., 1963, 85, 2720-2723. [all data]
LECO Corporation, 2003
LECO Corporation,
Determination of hydrocarbon components in petroleum naphthas, 2003, retrieved from http://www.leco.org/customersupport/apps/separationscience/-190.pdf. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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