Benzene, 2-propenyl-

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Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil429. ± 2.KAVGN/AAverage of 12 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus233.15KN/ALespieau, 1930Uncertainty assigned by TRC = 4. K; TRC
Quantity Value Units Method Reference Comment
Δvap46.3 ± 0.2kJ/molGSVerevkin, 1999Based on data from 274. to 313. K.; AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
46.5 ± 0.2294.GSVerevkin, 1999Based on data from 274. to 313. K.; AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry 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:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C9H9- + Hydrogen cation = Benzene, 2-propenyl-

By formula: C9H9- + H+ = C9H10

Quantity Value Units Method Reference Comment
Δr1540. ± 9.2kJ/molG+TSGlasovac, Eckert-Maksic, et al., 2002gas phase; The PhCH2CH=CH2 HOF by 81CHY/HIM is at least 4 kcal/mol too high in energy; B
Δr1540. ± 19.kJ/molG+TSDahlke and Kass, 1991gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B
Quantity Value Units Method Reference Comment
Δr1513. ± 8.8kJ/molIMREGlasovac, Eckert-Maksic, et al., 2002gas phase; The PhCH2CH=CH2 HOF by 81CHY/HIM is at least 4 kcal/mol too high in energy; B
Δr1513. ± 19.kJ/molIMRBDahlke and Kass, 1991gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B

Benzene, 2-propenyl- = (Z)-1-Phenylpropene

By formula: C9H10 = C9H10

Quantity Value Units Method Reference Comment
Δr-12.3 ± 0.6kJ/molEqkTaskinen and Lindholm, 1994liquid phase; solvent: DMSO; Heat of isomerization; ALS

Hydrogen + Benzene, 2-propenyl- = Benzene, propyl-

By formula: H2 + C9H10 = C9H12

Quantity Value Units Method Reference Comment
Δr-126. ± 0.8kJ/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon; ALS

Benzene, 2-propenyl- = trans-β-Methylstyrene

By formula: C9H10 = C9H10

Quantity Value Units Method Reference Comment
Δr-23.3 ± 0.5kJ/molEqkTaskinen and Lindholm, 1994liquid phase; solvent: DMSO; ALS

trans-β-Methylstyrene = Benzene, 2-propenyl-

By formula: C9H10 = C9H10

Quantity Value Units Method Reference Comment
Δr-20.1kJ/molEqkTaskinen and Lindholm, 1994gas phase; Heat of isomerization; ALS

References

Go To: Top, Phase change data, Reaction thermochemistry data, Notes

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

Lespieau, 1930
Lespieau, R., Preparation of the β Dibromides of Trimethylenic Hydrocarbons, Bull. Soc. Chim. Fr., 1930, 47, 847. [all data]

Verevkin, 1999
Verevkin, Sergey P., Thermochemical investigation on α-methyl-styrene and parent phenyl substituted alkenes, Thermochimica Acta, 1999, 326, 1-2, 17-25, https://doi.org/10.1016/S0040-6031(98)00585-1 . [all data]

Glasovac, Eckert-Maksic, et al., 2002
Glasovac, Z.; Eckert-Maksic, M.; Dacres, J.E.; Kass, S.R., Gas phase formation of 1-phenylcyclobuten-3-yl and 1- phenylallyl anions and a determination of the allylic C-H acidities and bond dissociation energies of 1-phenylcyclobutene and (E)-1-phen, J. Chem. Soc. Perkin Trans., 2002, 2, 3, 410-415, https://doi.org/10.1039/b111398d . [all data]

Dahlke and Kass, 1991
Dahlke, G.D.; Kass, S.R., Substituent Effects in the Gas Phase - 1-Substituted Allyl Anions, J. Am. Chem. Soc., 1991, 113, 15, 5566, https://doi.org/10.1021/ja00015a008 . [all data]

Taskinen and Lindholm, 1994
Taskinen, E.; Lindholm, N., Relative thermodynamic stabilities of the isomeric propenylbenzenes, J. Phys. Org. Chem., 1994, 7, 256-258. [all data]

Rogers and McLafferty, 1971
Rogers, D.W.; McLafferty, F.J., A new hydrogen calorimeter. Heats of hydrogenation of allyl and vinyl unsaturation adjacent to a ring, Tetrahedron, 1971, 27, 3765-3775. [all data]


Notes

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