2-Methyl-1,3-cyclopentadiene

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Gas phase ion energetics 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 as indicated in comments:
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 C6H8+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
8.46 ± 0.05EIMeyer and Harrison, 1964RDSH
8.4PECradock, Ebsworth, et al., 1975Vertical value; LLK
8.45PECradock, Findlay, et al., 1974Vertical value; LLK

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

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillaryOV-101100.644.Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.23 mm
CapillaryOV-10180.642.Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.23 mm
CapillarySqualane100.630.Diez, Guillen, et al., 1990N2; Column length: 45. m; Column diameter: 0.5 mm
CapillarySqualane80.627.5Diez, Guillen, et al., 1990N2; Column length: 45. m; Column diameter: 0.5 mm
CapillarySE-54100.653.8Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.22 mm
CapillarySE-5480.649.6Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.22 mm
PackedSqualane70.627.Safina, Poznyak, et al., 1989He, Risorb (0.2-0.3 mm); Column length: 2. m
PackedSqualane70.628.Safina, Poznyak, et al., 1989He, Risorb (0.2-0.3 mm); Column length: 2. m
CapillaryBP-1100.644.Bermejo, Blanco, et al., 1987N2; Column length: 12. m; Column diameter: 0.22 mm
CapillaryBP-180.641.Bermejo, Blanco, et al., 1987N2; Column length: 12. m; Column diameter: 0.22 mm
CapillaryOV-101100.644.Bermejo, Blanco, et al., 1987N2; Column length: 25. m; Column diameter: 0.23 mm
CapillaryOV-10180.642.Bermejo, Blanco, et al., 1987N2; Column length: 25. m; Column diameter: 0.23 mm
CapillarySqualane64.624.Sojak, Ruman, et al., 198750. m/0.25 mm/0.25 μm, H2
CapillarySqualane50.622.8Bajus, Veselý, et al., 1979Column length: 100. m; Column diameter: 0.25 mm
PackedSqualane100.631.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane27.621.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane49.624.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane67.627.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane27.623.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane49.626.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane67.628.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane27.621.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane49.624.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane67.627.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm

Kovats' RI, polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillaryCarbowax 20M64.834.2Sojak, Ruman, et al., 198750. m/0.25 mm/0.25 μm, H2

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryPONA632.Zhang, Ding, et al., 200950. m/0.20 mm/0.50 μm, Nitrogen, 35. C @ 15. min, 2. K/min, 200. C @ 10. min

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Meyer and Harrison, 1964
Meyer, F.; Harrison, A.G., Ionization potentials of methyl-substituted benzenes and cyclopentadienes, Can. J. Chem., 1964, 42, 2256. [all data]

Cradock, Ebsworth, et al., 1975
Cradock, S.; Ebsworth, E.A.V.; Moretto, H.; Rankin, D.W.H., Photoelectron spectra and fluxional behaviour in some σ-cyclopentadienes, J. Chem. Soc. Dalton Trans., 1975, 390. [all data]

Cradock, Findlay, et al., 1974
Cradock, S.; Findlay, R.H.; Palmer, M.H., Bonding in methyl- and silyl-cyclopentadiene compounds: a study by photoelectron spectroscopy ab initio molecular-orbital calculations, J. Chem. Soc. Dalton Trans., 1974, 1650. [all data]

Diez, Guillen, et al., 1990
Diez, M.A.; Guillen, M.D.; Blanco, C.G.; Bermejo, J., Chromatographic study of methylcyclopentadiene dimers and iso-dimers and determination of their boiling points, J. Chromatogr., 1990, 508, 363-374, https://doi.org/10.1016/S0021-9673(00)91279-2 . [all data]

Safina, Poznyak, et al., 1989
Safina, L.R.; Poznyak, T.I.; Lisitsyn, D.M.; Kiseleva, E.V.; Kovalev, G.I., Selective gas-chromatographic determination of trace unsaturated and aromatic-hydrocarbons in complex-mixtures, J. Appl. Chem. USSR (Engl. Transl.), 1989, 44, 5, 749-754. [all data]

Bermejo, Blanco, et al., 1987
Bermejo, J.; Blanco, C.G.; Diez, M.A.; Guillén, M.D., Kováts retention indices of selected mono and polycyclic olefins, J. Hi. Res. Chromatogr. Chromatogr. Comm., 1987, 10, 8, 461-463, https://doi.org/10.1002/jhrc.1240100809 . [all data]

Sojak, Ruman, et al., 1987
Sojak, L.; Ruman, J.; Janak, J., Characterization of Monoalkylcyclopentadiens by Retention-Structure Correlation in Capillary Gas Chromatography, J. Chromatogr., 1987, 391, 79-87, https://doi.org/10.1016/S0021-9673(01)94306-7 . [all data]

Bajus, Veselý, et al., 1979
Bajus, M.; Veselý, V.; Leclercq, P.A.; Rijks, J.A., Steam cracking of hydrocarbons. 2. Pyrolysis of methylcyclohexane, Ind. Eng. Chem. Prod. Res. Dev., 1979, 18, 2, 135-142, https://doi.org/10.1021/i360070a012 . [all data]

Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]

Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203 . [all data]

Zhang, Ding, et al., 2009
Zhang, X.; Ding, L.; Sun, Z.; Song, L.; Sun, T., Study on quantitative structure-retention relationships for hydrocarbons in FCC gasoline, Chromatographia, 2009, 70, 3/4, 511-518, https://doi.org/10.1365/s10337-009-1174-0 . [all data]


Notes

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