Cyclopropylacetylene
- Formula: C5H6
- Molecular weight: 66.1011
- IUPAC Standard InChI: InChI=1S/C5H6/c1-2-5-3-4-5/h1,5H,3-4H2
- IUPAC Standard InChIKey: NPTDXPDGUHAFKC-UHFFFAOYSA-N
- CAS Registry Number: 6746-94-7
- 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: Cyclopropane,ethynyl-; Cyclopropylacethylene; ethynyl cyclopropane
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Phase change data
Go To: Top, Gas phase ion energetics data, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 7.39 ± 0.36 | kcal/mol | V | Lebedeva, Gutner, et al., 1977 | ALS |
| ΔvapH° | 7.39 | kcal/mol | N/A | Lebedeva, Gutner, et al., 1977 | DRB |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 7.43 | 305. | A | Stephenson and Malanowski, 1987 | Based on data from 290. to 320. K.; AC |
Gas phase ion energetics data
Go To: Top, Phase change data, 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to C5H6+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.7 | PE | Bruckmann and Klessinger, 1973 | LLK |
| 9.58 | PE | Bruckmann and Klessinger, 1973 | Vertical value; LLK |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lebedeva, Gutner, et al., 1977
Lebedeva, N.D.; Gutner, N.M.; Nazarova, L.F.,
Enthalpies of burning and the formation of some substituted derivatives of cyclopropane,
Termodin. Org. Soedin., 1977, 26-29. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Bruckmann and Klessinger, 1973
Bruckmann, P.; Klessinger, M.,
Photoelektronenspektren organischer verbindungen. III. Photoelektronenspektren acetylensubstituierter kleiner ringe,
J. Electron Spectrosc. Relat. Phenom., 1973, 2, 341. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.