Bicyclo[2.2.1]hept-2-ene, 5-methylene-


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: John E. Bartmess

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Individual Reactions

C8H9- + Hydrogen cation = Bicyclo[2.2.1]hept-2-ene, 5-methylene-

By formula: C8H9- + H+ = C8H10

Quantity Value Units Method Reference Comment
Δr390.0 ± 2.1kcal/molG+TSLee and Squires, 1986gas phase; Ca. 1 kcal < H2O
Quantity Value Units Method Reference Comment
Δr383.1 ± 2.0kcal/molIMRBLee and Squires, 1986gas phase; Ca. 1 kcal < H2O

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 C8H10+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.01PEAsmus and Klessinger, 1974Vertical value; LLK
8.93PECowling, Johnstone, et al., 1973Vertical value; LLK

De-protonation reactions

C8H9- + Hydrogen cation = Bicyclo[2.2.1]hept-2-ene, 5-methylene-

By formula: C8H9- + H+ = C8H10

Quantity Value Units Method Reference Comment
Δr390.0 ± 2.1kcal/molG+TSLee and Squires, 1986gas phase; Ca. 1 kcal < H2O; B
Quantity Value Units Method Reference Comment
Δr383.1 ± 2.0kcal/molIMRBLee and Squires, 1986gas phase; Ca. 1 kcal < H2O; B

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.

Lee and Squires, 1986
Lee, R.E.; Squires, R.R., Anionic homoaromaticity: A gas phase experimental study, J. Am. Chem. Soc., 1986, 105, 5078. [all data]

Asmus and Klessinger, 1974
Asmus, P.; Klessinger, M., Photoelectron spectra of organic compounds. VI. Exocyclic methylene compounds, Tetrahedron, 1974, 30, 2477. [all data]

Cowling, Johnstone, et al., 1973
Cowling, S.A.; Johnstone, R.A.W.; Gorman, A.A.; Smith, P.G., Photoelectron spectrum of 5-methylenenorborn-2-ene and through-space interactions (homobutadiene conjugation), J. Chem. Soc., Chem. Commun., 1973, 627. [all data]


Notes

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