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
Δvap11.1 ± 0.05kcal/molGSVerevkin, 1999Based on data from 274. to 313. K.; AC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
11.1 ± 0.05294.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:


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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

View reactions leading to C9H10+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
8.70PEFu and Dunbar, 1978LLK
7.8 ± 0.1EIKoppel, Schwarz, et al., 1974LLK
8.60PERabalais and Colton, 1973LLK
8.20 ± 0.02PEMaier and Turner, 1973LLK
9.16PEEaton and Traylor, 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C9H9+11.6 ± 0.1HEIKoppel, Schwarz, et al., 1974LLK

De-protonation reactions

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

By formula: C9H9- + H+ = C9H10

Quantity Value Units Method Reference Comment
Δr368.1 ± 2.2kcal/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
Δr368.1 ± 4.6kcal/molG+TSDahlke and Kass, 1991gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B
Quantity Value Units Method Reference Comment
Δr361.5 ± 2.1kcal/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
Δr361.5 ± 4.5kcal/molIMRBDahlke and Kass, 1991gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B

References

Go To: Top, Phase change data, Gas phase ion energetics 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]

Fu and Dunbar, 1978
Fu, E.W.; Dunbar, R.C., Photodissociation spectroscopy and structural rearrangements in ions of cyclooctatetraene, styrene and related molecules, J. Am. Chem. Soc., 1978, 100, 2283. [all data]

Koppel, Schwarz, et al., 1974
Koppel, C.; Schwarz, H.; Bohlmann, F., Elektronenstossinduzierte fragmentierung von acetylenverbindungen. VIII. Struktur der stabilen und instabilen ionen[C9H9]+ aus isomeren C9H10- kohlenwasserstoffen, Org. Mass Spectrom., 1974, 8, 25. [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]

Maier and Turner, 1973
Maier, J.P.; Turner, D.W., Steric inhibition of resonance studied by molecular photoelectron spectroscopy. Part 2. Phenylethylenes, J. Chem. Soc. Faraday Trans. 2, 1973, 69, 196. [all data]

Eaton and Traylor, 1974
Eaton, D.F.; Traylor, T.G., Distortional stabilization in phenyl participations, J. Am. Chem. Soc., 1974, 96, 7109. [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]


Notes

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