Phenylethyne
- Formula: C8H6
- Molecular weight: 102.1332
- IUPAC Standard InChIKey: UEXCJVNBTNXOEH-UHFFFAOYSA-N
- CAS Registry Number: 536-74-3
- 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. - Isotopologues:
- Other names: Benzene, ethynyl-; Ethyne, phenyl-; Ethynylbenzene; Phenylacetylene; 1-Phenylethyne; Acetylene, phenyl-; Ethinylbenzene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, 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 compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 306.6 ± 1.7 | kJ/mol | Chyd | Davis, Allinger, et al., 1985 | ALS |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
114.89 | 298.15 | Evans J.C., 1960 | GT |
115.60 | 300. | ||
150.41 | 400. | ||
178.53 | 500. | ||
200.87 | 600. | ||
218.78 | 700. | ||
233.43 | 800. | ||
245.64 | 900. | ||
255.94 | 1000. | ||
264.68 | 1100. | ||
272.17 | 1200. | ||
278.57 | 1300. | ||
284.14 | 1400. | ||
288.91 | 1500. |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, 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:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C8H6+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 832.0 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 801.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Proton affinity at 298K
Proton affinity (kJ/mol) | Reference | Comment |
---|---|---|
828.9 | Aue, Guidoni, et al., 2000 | Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM |
Gas basicity at 298K
Gas basicity (review) (kJ/mol) | Reference | Comment |
---|---|---|
798.7 | Aue, Guidoni, et al., 2000 | Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.82 ± 0.02 | PE | Lichtenberger, Renshaw, et al., 1993 | LL |
8.825 ± 0.001 | TE | Dyke, Ozeki, et al., 1992 | LL |
8.82 ± 0.08 | PE | Elbel, Lienert, et al., 1981 | LLK |
8.9 | EI | Koppel, Schwarz, et al., 1974 | LLK |
8.75 | PE | Rabalais and Colton, 1973 | LLK |
8.815 ± 0.005 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
9.56 ± 0.02 | PE | Deshmukh, Dutta, et al., 1982 | Vertical value; LBLHLM |
8.78 | PE | Palmer, Moyes, et al., 1980 | Vertical value; LLK |
8.80 | PE | Bock, Aygen, et al., 1980 | Vertical value; LLK |
8.82 ± 0.02 | PE | Carlier and Mouvier, 1979 | Vertical value; LLK |
8.78 | PE | Griebel, Hohlneicher, et al., 1974 | Vertical value; LLK |
8.88 ± 0.02 | PE | Maier and Turner, 1973 | Vertical value; LLK |
De-protonation reactions
C8H5- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1551. ± 9.6 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1518. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, 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, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 100. | 870. | Engewald, Topalova, et al., 1987 | Column length: 50. m; Column diameter: 0.30 mm |
Capillary | Squalane | 106. | 833. | Kugucheva and Mashinsky, 1983 | He; Column length: 100. m |
Capillary | Squalane | 96. | 830. | Kugucheva and Mashinsky, 1983 | He; Column length: 100. m |
Capillary | SE-30 | 70. | 862.1 | Tóth, 1983 | N2; Column length: 15. m; Column diameter: 0.25 mm |
Capillary | SE-30 | 130. | 875. | Bredael, 1982 | Column length: 100. m; Column diameter: 0.5 mm |
Capillary | SE-30 | 80. | 862. | Bredael, 1982 | Column length: 100. m; Column diameter: 0.5 mm |
Capillary | Squalane | 86. | 830.4 | Macák, Nabivach, et al., 1982 | N2; Column length: 50. m; Column diameter: 0.25 mm |
Capillary | Squalane | 96. | 834.1 | Macák, Nabivach, et al., 1982 | N2; Column length: 50. m; Column diameter: 0.25 mm |
Capillary | Squalane | 86. | 830.4 | Nabivach, Bur'yan, et al., 1978 | Column length: 50. m; Column diameter: 0.25 mm |
Capillary | Squalane | 96. | 834.1 | Nabivach, Bur'yan, et al., 1978 | Column length: 50. m; Column diameter: 0.25 mm |
Packed | DC-200 | 100. | 868. | Rohrschneider, 1966 | Column length: 4. m |
Packed | Squalane | 100. | 833. | Rohrschneider, 1966 | Column length: 5. m |
Packed | Apiezon L | 100. | 875. | Rohrschneider, 1966 | Column length: 5. m |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | PEG-20M | 70. | 1357.2 | Tóth, 1983 | N2; Column length: 30. m; Column diameter: 0.3 mm |
Packed | Carbowax 20M | 100. | 1370. | Rohrschneider, 1966 | Column length: 2. m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 881.0 | Xu, van Stee, et al., 2003 | 30. m/0.25 mm/1. μm, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C |
Capillary | DB-5 | 877. | Dallüge, van Stee, et al., 2002 | 30. m/0.25 mm/1. μm, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C |
Capillary | DB-5 | 875.9 | Helmig, Pollock, et al., 1996 | 60. m/0.33 mm/0.25 μm, 6. K/min; Tstart: -50. C; Tend: 180. C |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 856. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
Capillary | OV-1 | 849. | Guan, Zheng, et al., 1992 | 50. m/0.32 mm/0.52 μm, H2, 1. K/min; Tstart: 30. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP-Sil5 CB MS | 863. | Tirillini, Verdelli, et al., 2000 | 50. m/0.32 mm/0.4 μm; Program: 0C (3min) => 3C/min => 50C => 5C/min => 220C (30min) |
Capillary | Methyl Silicone | 862. | Zenkevich and Kuznetsova, 1990 | Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-Innowax | 1372. | Soria, Sanz, et al., 2008 | 50. m/0.20 mm/0.20 μm, Helium, 45. C @ 2. min, 4. K/min, 190. C @ 50. min |
Capillary | Carbowax 20M | 1354. | de la Fuente, Martinez-Castro, et al., 2005 | 50. m/0.25 mm/0.25 μm, Helium, 40. C @ 2. min, 4. K/min, 190. C @ 30. min |
Capillary | HP-Innowax | 1372. | Soria, Gonzalez, et al., 2004 | 50. m/0.2 mm/0.2 μm, He, 45. C @ 2. min, 4. K/min, 190. C @ 50. min |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1361. | Peng, Yang, et al., 1991 | Program: not specified |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 | 122.0 | Wang, Hou, et al., 2007 | 30. m/0.30 mm/0.25 μm, Helium, 50. C @ 5. min, 5. K/min, 200. C @ 15. min |
Capillary | HP-5 | 122.1 | Shao, Wang, et al., 2006 | 30. m/0.3 mm/0.25 μm, He, 50. C @ 5. min, 5. K/min, 200. C @ 15. min |
Lee's RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5MS | 122.7 | Aracil, Font, et al., 2005 | Column length: 60. m; Column diameter: 0.25 mm; Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, 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.
Davis, Allinger, et al., 1985
Davis, H.E.; Allinger, N.L.; Rogers, D.W.,
Enthalpies of hydrogenation of phenylalkynes: indirect determination of the enthalpy of formation of diphenylcyclopropenone,
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Evans J.C., 1960
Evans J.C.,
The vibrational spectra ethynyl benzene and ethynyl benzene-d,
Spectrochim. Acta, 1960, 16, 918-928. [all data]
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
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Aue, Guidoni, et al., 2000
Aue, D.H.; Guidoni, M.; Betowski, L.D.,
Ab initio calculated gas-phase basicities of polynuclear aromatic hydrocarbons,
Int. J. Mass Spectrom., 2000, 201, 283. [all data]
Lichtenberger, Renshaw, et al., 1993
Lichtenberger, D.L.; Renshaw, S.K.; Bullock, R.M.,
Metal-acetylide bonding in (η<5>-C5H5)Fe(CO)2C≡CR compounds. Measures of metal-dπ-acetylide-π interactions from photoelectron spectroscopy,
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Dyke, Ozeki, et al., 1992
Dyke, J.M.; Ozeki, H.; Takahashi, M.; Cockett, M.C.R.; Kimura, K.,
A study of phenylacetylene and styrene, and their argon complexes PA-Ar and ST-Ar with laser threshold photoelectron spectroscopy,
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Elbel, Lienert, et al., 1981
Elbel, S.; Lienert, K.; Krebs, A.; tom Dieck, H.,
Phenylethin - mustersonde fur substituenteneffekte,
Liebigs Ann. Chem., 1981, 1785. [all data]
Koppel, Schwarz, et al., 1974
Koppel, C.; Schwarz, H.; Bohlmann, F.,
Elektronenstossinduzierte fragmentierung von acetylenverbindungen,
Org. Mass Spectrom., 1974, 9, 324. [all data]
Rabalais and Colton, 1973
Rabalais, J.W.; Colton, R.J.,
Electronic interaction between the phenyl group and its unsaturated substituents,
J. Electron Spectrosc. Relat. Phenom., 1973, 1, 83. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Deshmukh, Dutta, et al., 1982
Deshmukh, P.; Dutta, T.K.; Hwang, J.L.-S.; Housecroft, C.E.; Fehlner, T.P.,
Photoelectron spectroscopic measurements of the relative charge on carbyne fragments bound to polynuclear cobalt carbonyl clusters,
J. Am. Chem. Soc., 1982, 104, 1740. [all data]
Palmer, Moyes, et al., 1980
Palmer, M.H.; Moyes, W.; Spiers, M.,
The electronic structure of substituted benzenes: Ab initio calculations and photoelectron spectra for benzonitrile, the tolunitriles, fluorobenzonitriles, dicyanobenzenes and ethynylbenzene,
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Bock, Aygen, et al., 1980
Bock, H.; Aygen, S.; Rosmus, P.; Solouki, B.,
Analyse und optimierung von gasphasen-reaktionen. XVII. Selenoketen,
Chem. Ber., 1980, 113, 3187. [all data]
Carlier and Mouvier, 1979
Carlier, P.; Mouvier, G.,
Etude par spectrometrie de photoelectrons de la structure electronique des phenyl-alcynes conjugues,
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Griebel, Hohlneicher, et al., 1974
Griebel, R.; Hohlneicher, G.; Dorr, F.,
A photoelectron spectroscopic study of benzonitrile, ethynylbenzene and some of its substituted derivatives,
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Maier and Turner, 1973
Maier, J.P.; Turner, D.W.,
Steric inhibition of resonance studied by molecular photoelectron spectroscopy. Part 2. Phenylethylenes,
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Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr.,
The gas phase acidity scale from methanol to phenol,
J. Am. Chem. Soc., 1979, 101, 6047. [all data]
Engewald, Topalova, et al., 1987
Engewald, W.; Topalova, I.; Petsev, N.; Dimitrov, Chr.,
Structure-Retention Correlations of Hydrocarbons in GLC and GSC. Alkenylbenzenes,
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Kugucheva and Mashinsky, 1983
Kugucheva, E.E.; Mashinsky, V.I.,
Retention Indices of Aromatic Hydrocarbons on Capillary Columns with Squalan and Polyphenyl Ether,
Zh. Anal. Khim. (Rus), 1983, 38, 11, 2023-2026. [all data]
Tóth, 1983
Tóth, T.,
Use of capillary gas chromatography in collecting retention and chemical information for the analysis of complex petrochemical mixtures,
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Bredael, 1982
Bredael, P.,
Retention indices of hydrocarbons on SE-30,
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Macák, Nabivach, et al., 1982
Macák, J.; Nabivach, V.; Buryan, P.; Sindler, S.,
Dependence of retention indices of alkylbenzenes on their molecular structure,
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Nabivach, Bur'yan, et al., 1978
Nabivach, V.M.; Bur'yan, P.; Matsak, I.,
Retention indices of aromatic hydrocarbons on a squalane capillary column,
Zh. Anal. Khim., 1978, 33, 7, 1108-1113. [all data]
Rohrschneider, 1966
Rohrschneider, L.,
Eine methode zur charakterisierung von gaschromatographischen trennflüssigkeiten,
J. Chromatogr., 1966, 22, 6-22, https://doi.org/10.1016/S0021-9673(01)97064-5
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Xu, van Stee, et al., 2003
Xu, X.; van Stee, L.L.P.; Williams, J.; Beens, J.; Adahchour, M.; Vreuls, R.J.J.; Brinkman, U.A.Th.; Lelieveld, J.,
Comprehensive two-dimensional gas chromatography (GC×GC) measurements of volatile organic compounds in the atmosphere,
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Dallüge, van Stee, et al., 2002
Dallüge, J.; van Stee, L.L.P.; Xu, X.; Williams, J.; Beens, J.; Vreuls, R.J.J.; Brinkman, U.A.Th.,
Unravelling the composition of very complex samples by comprehensive gas chromatography coupled to time-of-flight mass spectrometry. Cigarette smoke,
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Helmig, Pollock, et al., 1996
Helmig, D.; Pollock, W.; Greenberg, J.; Zimmerman, P.,
Gas chromatography mass spectrometry analysis of volatile organic trace gases at Mauna Loa Observatory, Hawaii,
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Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Guan, Zheng, et al., 1992
Guan, Y.; Zheng, P.; Zhou, L.,
Prediction, optimization of separation, and identification of unknown compounds in capillary gas chromatography,
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Tirillini, Verdelli, et al., 2000
Tirillini, B.; Verdelli, G.; Paolocci, F.; Ciccioli, P.; Frattoni, M.,
The volatile organic compounds from the mycelium of Tuber borchii Vitt.,
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Zenkevich and Kuznetsova, 1990
Zenkevich, I.G.; Kuznetsova, L.M.,
Logic Criteria on Prediction of Gas Chromatographic Retention Indices from Physico-Chemical Properties of Organic Compounds,
Dokl. Akad. Nauk SSSR, 1990, 315, 4, 881-885. [all data]
Soria, Sanz, et al., 2008
Soria, A.C.; Sanz, J.; Martinez-Castro, I.,
SPME followed by GC-MS: a powerful technique for qualitative analysis of honey volatiles,
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de la Fuente, Martinez-Castro, et al., 2005
de la Fuente, E.; Martinez-Castro, I.; Sanz, J.,
Characterization of Spanish unifloral honeys by solid phase microextraction and gas chromatography-mass spectrometry,
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Soria, Gonzalez, et al., 2004
Soria, A.C.; Gonzalez, M.; de Lorenzo, C.; Martinez-Castro, I.; Sanza, J.,
Characterization of artisanal honeys from Madrid (Central Spain) on the basis of their melissopalynological, physicochemical and volatile composition data,
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Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F.,
Prediction of rentention idexes. II. Structure-retention index relationship on polar columns,
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Wang, Hou, et al., 2007
Wang, G.; Hou, Z.; Sun, Y.; Liu, Y.; Xie, B.; Liu, S.,
Investigation of pyrolysis behavior of fenoxycarb using PY-GC-MS assisted with chemometric methods,
Chem. Anal., 2007, 52, 141-156. [all data]
Shao, Wang, et al., 2006
Shao, X.; Wang, G.; Sun, Y.; Zhang, R.; Xie, K.; Liu, H.,
Determination and Characterization of the Pyrolysis Products of Isoprocarb by GC-MS,
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Aracil, Font, et al., 2005
Aracil, I.; Font, R.; Conesa, J.A.,
Semivolatile and volatile compounds from the pyrolysis and combustion of polyvinyl chloride,
J. Anal. Appl. Pyrolysis, 2005, 74, 1-2, 465-478, https://doi.org/10.1016/j.jaap.2004.09.008
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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