- Formula: C5H8
- Molecular weight: 68.1170
- IUPAC Standard InChI:
- Download the identifier in a file.
- IUPAC Standard InChIKey: NKTDTMONXHODTI-UHFFFAOYSA-N
- CAS Registry Number: 627-21-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Ethylmethylacetylene; 1-Ethyl-2-methylacetylene; C2H5C«equiv»CCH3; pent-2-yne
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Gas phase ion energetics data
Go To: Top, References, Notes
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to C5H8+ (ion structure unspecified)
|Proton affinity (review)||193.6||kcal/mol||N/A||Hunter and Lias, 1998||HL|
|Gas basicity||185.9||kcal/mol||N/A||Hunter and Lias, 1998||HL|
Ionization energy determinations
|9.44 ± 0.02||PE||Bieri, Burger, et al., 1977||LLK|
|9.439 ± 0.005||PE||Carlier, Dubois, et al., 1975||LLK|
Go To: Top, Gas phase ion energetics data, Notes
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]
Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P., Valence ionization enrgies of hydrocarbons, Helv. Chim. Acta, 1977, 60, 2213. [all data]
Carlier, Dubois, et al., 1975
Carlier, P.; Dubois, J.E.; Masclet, P.; Mouvier, G., Spectres de photoelectrons des alcynes, J. Electron Spectrosc. Relat. Phenom., 1975, 7, 55. [all data]
Go To: Top, Gas phase ion energetics data, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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