3-Methylphenylacetylene
- Formula: C9H8
- Molecular weight: 116.1598
- IUPAC Standard InChI: InChI=1S/C9H8/c1-3-9-6-4-5-8(2)7-9/h1,4-7H,2H3
- IUPAC Standard InChIKey: RENYIDZOAFFNHC-UHFFFAOYSA-N
- CAS Registry Number: 766-82-5
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Benzene,1-ethynyl-3-methyl-; 1-Ethynyl-3-methylbenzene; 3-Methylethynylbenzene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Gas phase ion energetics data
Go To: Top, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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 C9H8+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Proton affinity (review) | 843.0 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 810.6 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.63 ± 0.02 | PE | Carlier and Mouvier, 1979 | Vertical value; LLK |
Gas Chromatography
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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Capillary | PEG-20M | 70. | 1450.9 | Tóth, 1983 | N2; Column length: 30. m; Column diameter: 0.3 mm |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | VF-5MS | 1011. | N/A | 30. m/0.25 mm/0.25 μm, He; Tstart: 60. C; Tend: 270. C |
References
Go To: Top, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Carlier and Mouvier, 1979
Carlier, P.; Mouvier, G.,
Etude par spectrometrie de photoelectrons de la structure electronique des phenyl-alcynes conjugues,
J. Electron Spectrosc. Relat. Phenom., 1979, 16, 169-181. [all data]
Tóth, 1983
Tóth, T.,
Use of capillary gas chromatography in collecting retention and chemical information for the analysis of complex petrochemical mixtures,
J. Chromatogr., 1983, 279, 157-165, https://doi.org/10.1016/S0021-9673(01)93614-3
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Gas Chromatography, References
- 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.