2,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one


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

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Individual Reactions

2,5-Dimethyl-3,4-diphenylcyclopentadienone + 2,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one = C40H36O2

By formula: C19H16O + C21H20O = C40H36O2

Quantity Value Units Method Reference Comment
Δr-14.7kcal/molEqkWeiss, 1991liquid phase; solvent: CDCl3; NMR

2,5-Dimethyl-3,4-diphenylcyclopentadienone + 2,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one = C40H36O2

By formula: C19H16O + C21H20O = C40H36O2

Quantity Value Units Method Reference Comment
Δr-14.5kcal/molEqkWeiss, 1991liquid phase; solvent: CDCl3; NMR

2,5-Dimethyl-3,4-diphenylcyclopentadienone + 2,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one = C40H36O2

By formula: C19H16O + C21H20O = C40H36O2

Quantity Value Units Method Reference Comment
Δr-12.5kcal/molEqkWeiss, 1991liquid phase; solvent: CDCl3; NMR

2,5-Dimethyl-3,4-diphenylcyclopentadienone + 2,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one = C40H36O2

By formula: C19H16O + C21H20O = C40H36O2

Quantity Value Units Method Reference Comment
Δr-15.8kcal/molEqkWeiss, 1991liquid phase; solvent: CDCl3; NMR

2,5-Dimethyl-3,4-diphenylcyclopentadienone + 2,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one = C40H36O2

By formula: C19H16O + C21H20O = C40H36O2

Quantity Value Units Method Reference Comment
Δr-14.5kcal/molEqkWeiss, 1991liquid phase; solvent: CDCl3; NMR

22,5-diethyl-3,4-diphenylcyclopenta-2,4-dien-1-one = C42H40O2

By formula: 2C21H20O = C42H40O2

Quantity Value Units Method Reference Comment
Δr-9.13kcal/molEqkWeiss, 1991liquid phase; solvent: CDCl3; NMR

References

Go To: Top, Reaction thermochemistry data, Notes

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

Weiss, 1991
Weiss, H.M., Steric effects in the dimerization of 2,5-dialkyl-3,4-diphenylcyclopentadienones, J. Chem. Soc. Perkin Trans. 2, 1991, 439-443. [all data]


Notes

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