Ethylbenzene

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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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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

C8H9- + Hydrogen cation = Ethylbenzene

By formula: C8H9- + H+ = C8H10

Quantity Value Units Method Reference Comment
Δr406.0 ± 4.6kcal/molCIDTGraul and Squires, 1990gas phase; From decarboxylation threshold. Stable form probably the spiro[2.5]octadienide Maas and van Keelen, 1989; B
Quantity Value Units Method Reference Comment
Δr397.7 ± 4.7kcal/molH-TSGraul and Squires, 1990gas phase; From decarboxylation threshold. Stable form probably the spiro[2.5]octadienide Maas and van Keelen, 1989; B

C8H9- + Hydrogen cation = Ethylbenzene

By formula: C8H9- + H+ = C8H10

Quantity Value Units Method Reference Comment
Δr379.7 ± 2.1kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr373.3 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

2Hydrogen + Phenylethyne = Ethylbenzene

By formula: 2H2 + C8H6 = C8H10

Quantity Value Units Method Reference Comment
Δr-66.12 ± 0.06kcal/molChydDavis, Allinger, et al., 1985liquid phase; solvent: Hexane; ALS
Δr-64.7 ± 0.9kcal/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon; ALS
Δr-70.7 ± 1.0kcal/molChydFlitcroft and Skinner, 1958liquid phase; ALS

Nitric oxide anion + Ethylbenzene = (Nitric oxide anion • Ethylbenzene)

By formula: NO- + C8H10 = (NO- • C8H10)

Quantity Value Units Method Reference Comment
Δr44.5kcal/molICRReents and Freiser, 1981gas phase; switching reaction,Thermochemical ladder(NO+)C2H5OH, Entropy change calculated or estimated; Farid and McMahon, 1978; M

Ethylbenzene + 3Hydrogen = Cyclohexane, ethyl-

By formula: C8H10 + 3H2 = C8H16

Quantity Value Units Method Reference Comment
Δr-48.18 ± 0.10kcal/molChydDolliver, Gresham, et al., 1937gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -48.9 ± 0.1 kcal/mol; At 355 °K; ALS

Chlorine anion + Ethylbenzene = (Chlorine anion • Ethylbenzene)

By formula: Cl- + C8H10 = (Cl- • C8H10)

Quantity Value Units Method Reference Comment
Δr5.00kcal/molTDEqFrench, Ikuta, et al., 1982gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
5.0300.PHPMSFrench, Ikuta, et al., 1982gas phase; M

Ethylbenzene + Benzene, bromo- = C8H9Br + Benzene

By formula: C8H10 + C6H5Br = C8H9Br + C6H6

Quantity Value Units Method Reference Comment
Δr-0.14 ± 0.0050kcal/molCmMerdzhanov, Alenin, et al., 1982gas phase; Heat of isomerization at 349 K; ALS

Styrene + Hydrogen = Ethylbenzene

By formula: C8H8 + H2 = C8H10

Quantity Value Units Method Reference Comment
Δr-28.01 ± 0.41kcal/molChydAbboud, Jimenez, et al., 1995liquid phase; solvent: Hydrocarbon; Like gas phase; ALS

Ethylbenzene = Styrene + Hydrogen

By formula: C8H10 = C8H8 + H2

Quantity Value Units Method Reference Comment
Δr29.840kcal/molEqkGhosh, Ram Das Guha, et al., 1945gas phase; ALS

Henry's Law 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 by: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference Comment
0.125100.LN/A 
0.154600.MN/A 
0.11 QN/ASeveral references are given in the list of Henry's law constants but not assigned to specific species.
0.134600.MN/A 
0.12 QN/A missing citation give several references for the Henry's law constants but don't assign them to specific species.
0.115500.XN/A 
0.125000.XN/A 
0.161700.XN/A 
0.13 LN/A 
0.145500.XN/A 
0.12 MMackay, Shiu, et al., 1979 
0.11 TMackay, Shiu, et al., 1979 
0.12 VN/A 
0.176100.MN/A 
0.15 VBohon and Claussen, 1951 

Ion clustering 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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Chlorine anion + Ethylbenzene = (Chlorine anion • Ethylbenzene)

By formula: Cl- + C8H10 = (Cl- • C8H10)

Quantity Value Units Method Reference Comment
Δr5.00kcal/molTDEqFrench, Ikuta, et al., 1982gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
5.0300.PHPMSFrench, Ikuta, et al., 1982gas phase; M

Nitric oxide anion + Ethylbenzene = (Nitric oxide anion • Ethylbenzene)

By formula: NO- + C8H10 = (NO- • C8H10)

Quantity Value Units Method Reference Comment
Δr44.5kcal/molICRReents and Freiser, 1981gas phase; switching reaction,Thermochemical ladder(NO+)C2H5OH, Entropy change calculated or estimated; Farid and McMahon, 1978; M

References

Go To: Top, Reaction thermochemistry data, Henry's Law data, Ion clustering data, Notes

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

Graul and Squires, 1990
Graul, S.T.; Squires, R.R., Gas-Phase Acidities Derived from Threshold Energies for Activated Reactions, J. Am. Chem. Soc., 1990, 112, 7, 2517, https://doi.org/10.1021/ja00163a007 . [all data]

Maas and van Keelen, 1989
Maas, W.P.M.; van Keelen, P.A., On the Generation and Characterization of the Spiro[2,5]Octadienyl Anion in the Gas Phase, Org. Mass Spectrom., 1989, 24, 8, 546, https://doi.org/10.1002/oms.1210240807 . [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Davis, Allinger, et al., 1985
Davis, H.E.; Allinger, N.L.; Rogers, D.W., Enthalpies of hydrogenation of phenylalkynes: indirect determination of the enthalpy of formation of diphenylcyclopropenone, J. Org. Chem., 1985, 50, 3601-3604. [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]

Flitcroft and Skinner, 1958
Flitcroft, T.L.; Skinner, H.A., Heats of hydrogenation Part 2.-Acetylene derivatives, Trans. Faraday Soc., 1958, 54, 47-53. [all data]

Reents and Freiser, 1981
Reents, W.D.; Freiser, B.S., Gas-Phase Binding Energies and Spectroscopic Properties of NO+ Charge-Transfer Complexes, J. Am. Chem. Soc., 1981, 103, 2791. [all data]

Farid and McMahon, 1978
Farid, R.; McMahon, T.B., Gas-Phase Ion-Molecule Reactions of Alkyl Nitrites by Ion Cyclotron Resonance Spectroscopy, Int. J. Mass Spectrom. Ion Phys., 1978, 27, 2, 163, https://doi.org/10.1016/0020-7381(78)80037-0 . [all data]

Dolliver, Gresham, et al., 1937
Dolliver, M.a.; Gresham, T.L.; Kistiakowsky, G.B.; Vaughan, W.E., Heats of organic reactions. V. Heats of hydrogenation of various hydrocarbons, J. Am. Chem. Soc., 1937, 59, 831-841. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Merdzhanov, Alenin, et al., 1982
Merdzhanov, V.R.; Alenin, V.I.; Nesterova, T.N.; Rozhnov, A.M., Study of equilibrium transformation of ethylbromobenzenes, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1982, 25, 1047-1049. [all data]

Abboud, Jimenez, et al., 1995
Abboud, J.-L.M.; Jimenez, P.; Roux, M.V.; Turrion, C.; Lopez-Mardomingo, C.; Podosenin, A.; Rogers, D.W.; Liebman, J.F., Interrelations of the energetics of amides and alkenes: enthalpies of formation of N,N-dimethyl dertivatives of pivalamide, 1-adamantylcarboxamide and benzamide, and of styrene and its a-, trans-β- and β,β-methylated derivates, J. Phys. Org. Chem., 1995, 8, 15-25. [all data]

Ghosh, Ram Das Guha, et al., 1945
Ghosh, J.C.; Ram Das Guha, S.; Roy, A.N., Chemical equilibrium in styrene formation from ethyl-benzene at low pressures, Curr. Sci., 1945, 14, 269. [all data]

Mackay, Shiu, et al., 1979
Mackay, D.; Shiu, W.-Y.; Sutherland, R.P., Determination of Air-Water Henry's Law Constants for Hydrophobic Pollutants, Environ. Sci. Technol., 1979, 13, 333-337. [all data]

Bohon and Claussen, 1951
Bohon, R.L.; Claussen, W.F., The solubility of aromatic hydrocarbons in water, J. Am. Chem. Soc., 1951, 73, 1571-1578. [all data]


Notes

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