Benzene, 1,2-diethyl-

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Condensed phase 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfliquid-68.5 ± 1.0kJ/molCcbGood, 1973 
Δfliquid-70.9 ± 1.8kJ/molCcbProsen, Johnson, et al., 1946 
Quantity Value Units Method Reference Comment
Δcliquid-5867.43 ± 0.88kJ/molCcbGood, 1973Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -5868.31 ± 0.88 kJ/mol; Corresponding Δfliquid = -68.49 kJ/mol (simple calculation by NIST; no Washburn corrections)
Δcliquid-5865.1 ± 1.8kJ/molCcbProsen, Johnson, et al., 1946Corresponding Δfliquid = -70.79 kJ/mol (simple calculation by NIST; no Washburn corrections)

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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
8.51CTSPitt, 1970RDSH
8.51PEBrogli, Giovannini, et al., 1973Vertical value; LLK

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.

Good, 1973
Good, W.D., The enthalpies of combustion and formation of n-butylbenzene, the diethylbenzenes, the methyl-n-propylbenzenes, and the methyl-iso-propylbenzenes, J. Chem. Thermodyn., 1973, 5, 707-714. [all data]

Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes, J. Res. NBS, 1946, 36, 455-461. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Pitt, 1970
Pitt, C.G., Hyperconjugation: An alternative to the concept of the pπ-dπ bond in Group IV chemistry, J. Organomet. Chem., 1970, 23, 35. [all data]

Brogli, Giovannini, et al., 1973
Brogli, F.; Giovannini, E.; Heilbronner, E.; Schurter, R., Die photoelektronen spektren der benzocycloalkene, Chem. Ber., 1973, 106, 961. [all data]


Notes

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