Abstract
Jahn-Teller effect in corannulene monoanion is investigated by means of solution ESR. The Jahn-Teller distortion from the C 5v configuration to the Cs makes the ten hydrogen atoms inequivalent. ESR spectroscopy of the alkali-metal-doped monoanion solutions shows that as the temperature decreases, the eleven signals split into more complicated patterns. This can be interpreted in terms of pseudorotation about the C 5v Jahn-Teller crossing. Fifth-order anharmonicity of the vibration causes five equivalent C s wells in the adiabatic potential surface. The energy barriers among the wells were estimated to be 2.2 meV, from the temperature dependence of the spectra.
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© 2001 Springer Science+Business Media Dordrecht
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Sato, T., Yamamoto, A., Tanaka, H. (2001). Jahn-Teller Effect in Corannulene Anion. In: Kaplan, M.D., Zimmerman, G.O. (eds) Vibronic Interactions: Jahn-Teller Effect in Crystals and Molecules. NATO Science Series, vol 39. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0985-0_27
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DOI: https://doi.org/10.1007/978-94-010-0985-0_27
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-0045-4
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