Benzene, 1-methyl-3-(1-methylethenyl)-

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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 evaluated by: Edward P. Hunter and Sharon G. Lias

View reactions leading to C10H12+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)207.4kcal/molN/AHunter and Lias, 1998 
Quantity Value Units Method Reference Comment
Gas basicity200.5kcal/molN/AHunter and Lias, 1998 

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
CapillarySE-3065.1061.0Svob, Deur-Siftar, et al., 1974He; Column length: 25.5 m; Column diameter: 0.5 mm
CapillarySE-3065.1061.0Svob and Deur-Siftar, 1974He; Column length: 25.5 m; Column diameter: 0.5 mm

Kovats' RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryDB-51082.Adams and Nguyen, 200530. m/0.26 mm/0.25 μm, He, 3. K/min; Tstart: 60. C; Tend: 246. C
CapillaryDB-11075.Velasco-Negueruela, Sanz, et al., 200450. m/0.25 mm/0.25 μm, N2, 4. K/min; Tstart: 95. C; Tend: 240. C

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryHP-51085.Javidnia, Miri, et al., 200530. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 60. C; Tend: 260. C

Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryHP-5MS1084.1Andriamaharavo, 201430. m/0.25 mm/0.25 μm, He; Program: 60C (1 min) => 5 C/min => 210C => 10 C/min => 280C (15 min)

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryDB-51082.El-Massry, El-Ghorab, et al., 200930. m/0.25 mm/0.25 μm, Helium, 3. K/min, 220. C @ 40. min; Tstart: 35. C
CapillaryDB-11069.Pala-Paul, Brophy, et al., 200750. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 95. C; Tend: 240. C
CapillaryDB-51088.Morteza-Semnani K., Saeedi M., et al., 200630. m/0.25 mm/0.25 μm, He, 60. C @ 5. min, 4. K/min; Tend: 220. C
CapillarySPB-51082.Pino, Marquez, et al., 200630. m/0.25 mm/0.25 μm, Helium, 60. C @ 2. min, 4. K/min, 250. C @ 20. min
CapillaryDB-11062.Velasco-Negueruela, Pérez-Alonso, et al., 200550. m/0.25 mm/0.25 μm, 3. K/min; Tstart: 60. C; Tend: 240. C
CapillaryDB-11070.Palá-Paúl, García-Jiménez, et al., 200450. m/0.22 mm/0.25 μm, He, 4. K/min; Tstart: 70. C; Tend: 220. C
CapillaryDB-11072.Palá-Paúl, Velasco-Negueruela, et al., 200450. m/0.25 mm/0.25 μm, N2, 4. K/min; Tstart: 95. C; Tend: 240. C
CapillaryDB-11065.Palá-Paúl, Pérez-Alonso, et al., 200250. m/0.25 mm/0.25 μm, N2, 4. K/min; Tstart: 80. C; Tend: 225. C
CapillarySE-541080.Kollmannsberger, Nitz, et al., 199230. m/0.25 mm/0.25 μm, Hydrogen, 60. C @ 5. min, 2. K/min, 250. C @ 2. min

Normal alkane RI, polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryInnowax1456.Palá-Paúl, García-Jiménez, et al., 200450. m/0.2 mm/0.2 μm, He, 4. K/min; Tstart: 70. C; Tend: 220. C
CapillaryCarbowax 20M1424.Kollmannsberger, Nitz, et al., 199245. m/0.32 mm/1.0 μm, Hydrogen, 60. C @ 5. min, 2. K/min; Tend: 200. C

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.

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]

Svob, Deur-Siftar, et al., 1974
Svob, V.; Deur-Siftar, D.; Cramers, C.A., Mechanisms of the thermal degradation of alkylbenzenes, J. Chromatogr., 1974, 91, 659-675, https://doi.org/10.1016/S0021-9673(01)97946-4 . [all data]

Svob and Deur-Siftar, 1974
Svob, V.; Deur-Siftar, D., Kovats Retention Indices in the Identification of Alkylbenzene Degradation Products, J. Chromatogr., 1974, 91, 677-689, https://doi.org/10.1016/S0021-9673(01)97947-6 . [all data]

Adams and Nguyen, 2005
Adams, R.P.; Nguyen, S., Infra-specific variation in Juniperus deppeana and F. Sperryi in the Davis Mountains of Texas: variation in leaf essential oils and random amplified polymorphic DNAS (RAPDS), Phytologia, 2005, 87, 2, 96-108. [all data]

Velasco-Negueruela, Sanz, et al., 2004
Velasco-Negueruela, A.; Sanz, J.; Pérez-Alonso, M.J.; Palá-Paúl, J., The volatile components of the aerial parts of Melittis melissophyllum L. subsp. melissophyllum gathered in Spain, Botanica Complutensis, 2004, 28, 133-136. [all data]

Javidnia, Miri, et al., 2005
Javidnia, K.; Miri, R.; Kamalinejad, M.; Edraki, N., Chemical composition of Ferula persica Wild. essential oil from Iran, Flavour Fragr. J., 2005, 20, 6, 605-606, https://doi.org/10.1002/ffj.1496 . [all data]

Andriamaharavo, 2014
Andriamaharavo, N.R., Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2014. [all data]

El-Massry, El-Ghorab, et al., 2009
El-Massry, K.F.; El-Ghorab, A.H.; Shaaban, H.A.; Shibamoto, T., Chemical compositions and antioxidant/antimicrobial activities of various samples prepared from Schinus terebinthifolius leaves cultivated in Egipt, J. Agric. Food Chem., 2009, 57, 12, 5265-5270, https://doi.org/10.1021/jf900638c . [all data]

Pala-Paul, Brophy, et al., 2007
Pala-Paul, J.; Brophy, J.J.; Perez-Alonso, M.J.; Usano, J.; Soria, S.C., Essential oil composition of the different parts of Eryngium corniculatum Lam. (Apiaceae) from Spain, J. Chromatogr. A, 2007, 1175, 2, 289-293, https://doi.org/10.1016/j.chroma.2007.10.061 . [all data]

Morteza-Semnani K., Saeedi M., et al., 2006
Morteza-Semnani K.; Saeedi M.; Changizi S., The essential oil composition of Hypericum scabrum L. from Iran, Flavour Fragr. J., 2006, 21, 3, 513-515, https://doi.org/10.1002/ffj.1614 . [all data]

Pino, Marquez, et al., 2006
Pino, J.A.; Marquez, E.; Marbot, R., Volatile constituents from tea of roselle (Hibiscus sabdariffa L.), Rev. CENIC Ciencias Quimicas, 2006, 37, 3, 127-129. [all data]

Velasco-Negueruela, Pérez-Alonso, et al., 2005
Velasco-Negueruela, A.; Pérez-Alonso, M.J.; Palá-Paúl, J.; Iñigo, A.; López, G., The volatile oil composition of the berries of Juniperus macrocarpa Sibth. and Sm., gathered in Spain, J. Essent. Oil Res., 2005, 17, 1, 61-63, https://doi.org/10.1080/10412905.2005.9698831 . [all data]

Palá-Paúl, García-Jiménez, et al., 2004
Palá-Paúl, J.; García-Jiménez, R.; Pérez-Alonso, M.J.; Velasco-Negueruela, A.; Sanz, J., Essential oil composition of the leaves and stems of Meum athamanticum Jacq., from Spain, J. Chromatogr. A, 2004, 1036, 2, 245-247, https://doi.org/10.1016/j.chroma.2004.02.064 . [all data]

Palá-Paúl, Velasco-Negueruela, et al., 2004
Palá-Paúl, J.; Velasco-Negueruela, A.; Pérez-Alonso, M.J.; Maqueda, J.; Sanz, J., Volatile oil constituents from different parts of Cachrys trifida L., J. Essent. Oil Res., 2004, 16, 4, 347-349, https://doi.org/10.1080/10412905.2004.9698738 . [all data]

Palá-Paúl, Pérez-Alonso, et al., 2002
Palá-Paúl, J.; Pérez-Alonso, M.J.; Velasco-Negueruela, A.; Sanz, J., Analysis by gas chromatography-mass spectrometry of the volatile components of Ageratina adenophora Spreng., growing in the Canary Islands, J. Chromatogr. A, 2002, 947, 2, 327-331, https://doi.org/10.1016/S0021-9673(02)00016-X . [all data]

Kollmannsberger, Nitz, et al., 1992
Kollmannsberger, H.; Nitz, S.; Drawert, F., UBer die Aromastoffzusammensetzung von Hochdruckextrakten. I. Pfeffer (Piper nigrum, Var. muntok), Z. Lebensm. Unters Forsch., 1992, 194, 6, 545-551, https://doi.org/10.1007/BF01185481 . [all data]


Notes

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