Benzene, 2-propenyl-
- Formula: C9H10
- Molecular weight: 118.1757
- IUPAC Standard InChIKey: HJWLCRVIBGQPNF-UHFFFAOYSA-N
- CAS Registry Number: 300-57-2
- 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. - Other names: Benzene, allyl-; Allylbenzene; 1-Phenyl-2-propene; 1-Propene, 3-phenyl-; 2-Propenylbenzene; 3-Phenyl-1-propene; 3-Phenylpropene
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Reaction thermochemistry data
Go To: Top, 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 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- + =
By formula: C9H9- + H+ = C9H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1540. ± 9.2 | kJ/mol | G+TS | Glasovac, Eckert-Maksic, et al., 2002 | gas phase; The PhCH2CH=CH2 HOF by 81CHY/HIM is at least 4 kcal/mol too high in energy; B |
ΔrH° | 1540. ± 19. | kJ/mol | G+TS | Dahlke and Kass, 1991 | gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1513. ± 8.8 | kJ/mol | IMRE | Glasovac, Eckert-Maksic, et al., 2002 | gas phase; The PhCH2CH=CH2 HOF by 81CHY/HIM is at least 4 kcal/mol too high in energy; B |
ΔrG° | 1513. ± 19. | kJ/mol | IMRB | Dahlke and Kass, 1991 | gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B |
By formula: C9H10 = C9H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -12.3 ± 0.6 | kJ/mol | Eqk | Taskinen and Lindholm, 1994 | liquid phase; solvent: DMSO; Heat of isomerization; ALS |
By formula: H2 + C9H10 = C9H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -126. ± 0.8 | kJ/mol | Chyd | Rogers and McLafferty, 1971 | liquid phase; solvent: Hydrocarbon; ALS |
By formula: C9H10 = C9H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -23.3 ± 0.5 | kJ/mol | Eqk | Taskinen and Lindholm, 1994 | liquid phase; solvent: DMSO; ALS |
By formula: C9H10 = C9H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -20.1 | kJ/mol | Eqk | Taskinen and Lindholm, 1994 | gas phase; Heat of isomerization; ALS |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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 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 |
---|---|---|---|
8.70 | PE | Fu and Dunbar, 1978 | LLK |
7.8 ± 0.1 | EI | Koppel, Schwarz, et al., 1974 | LLK |
8.60 | PE | Rabalais and Colton, 1973 | LLK |
8.20 ± 0.02 | PE | Maier and Turner, 1973 | LLK |
9.16 | PE | Eaton and Traylor, 1974 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C9H9+ | 11.6 ± 0.1 | H | EI | Koppel, Schwarz, et al., 1974 | LLK |
De-protonation reactions
C9H9- + =
By formula: C9H9- + H+ = C9H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1540. ± 9.2 | kJ/mol | G+TS | Glasovac, Eckert-Maksic, et al., 2002 | gas phase; The PhCH2CH=CH2 HOF by 81CHY/HIM is at least 4 kcal/mol too high in energy; B |
ΔrH° | 1540. ± 19. | kJ/mol | G+TS | Dahlke and Kass, 1991 | gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1513. ± 8.8 | kJ/mol | IMRE | Glasovac, Eckert-Maksic, et al., 2002 | gas phase; The PhCH2CH=CH2 HOF by 81CHY/HIM is at least 4 kcal/mol too high in energy; B |
ΔrG° | 1513. ± 19. | kJ/mol | IMRB | Dahlke and Kass, 1991 | gas phase; Between Et2NOH, Me2CH=NOH. Reprotonation site uncertain.; B |
References
Go To: Top, Reaction thermochemistry 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.
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]
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]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy 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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