| 11. | The dirhodium ( II ) tetracarboxylate metallocarbene stabilized by ?C-Rh?! ?C = O hyperconjugation.
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| 12. | It has been shown, however, that hyperconjugation does depend on the solvent in the system.
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| 13. | His work was a crucial first step to the beginnings of the ideas of hyperconjugation and conjugation effects.
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| 14. | Of these two models, hyperconjugation is generally considered the principal cause behind the gauche effect in difluoroethane.
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| 15. | One alternative to the steric hindrance explanation is based on hyperconjugation as analyzed within the Natural Bond Orbital framework.
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| 16. | To quantify hyperconjugation effect, they designed the following isodesmic reactions in 1-butyne and 1-butene.
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| 17. | Gronert claims that his model successfully reproduces accepted data without invoking hyperconjugation and can perhaps explain well-established trends.
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| 18. | An instance where hyperconjugation may be overlooked as a possible chemical explanation is in rationalizing the rotational barrier of ethane.
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| 19. | The lowering of the LUMO is the result of hyperconjugation between alkyne ? donor orbitals and CF ? * acceptors.
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| 20. | Some authors also question the validity of this hyperconjugation model based on results from the quantum theory of atoms in molecules.
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