Előadó: Midori Akiyama (Kyoto University, Japan, host: Kováts Éva)
Előadás címe: The Molecule of the Year 2022: Synthesis and Properties of Perfluorocubane
Dátum: 2023. június 12.,10:00
Helyszín: 1-es épület, 2. emeleti Tanácsterem, illetve online
Join Zoom Meeting
https://wigner-hu.zoom.us/j/89821422020?pwd=UHQyNFF3TGZZUXBGbDhmMHRPYmJ…
Meeting ID: 898 2142 2020
Passcode: 302754
Összefoglaló:
Fluorinated analogs of polyhedral hydrocarbons, namely polyhedral fluorocarbon, have been predicted to localize an electron within their cages upon reduction, which arises from a stabilized vacant orbital within the cage derived from multiple σ* orbitals of C–F bonds. This internal localization of electrons stands in stark contrast to common π-conjugated electron acceptors, which usually host electrons on their molecular surfaces. In the present study, we achieved the synthesis and characterization of perfluorocubane, a stable polyhedral fluorocarbon (Science, 2022, 377, 756–759.). The key to the successful synthesis was the efficient introduction of multiple fluorine atoms to cubane by liquid-phase reaction with fluorine gas. The solid-state structure of perfluorocubane was confirmed using x-ray crystallography, and its electron-accepting character was corroborated electrochemically and spectroscopically. The radical anion of perfluorocubane was examined by matrix-isolation electron spin resonance spectroscopy, which revealed that the unpaired electron accepted by perfluorocubane is located predominantly inside the cage.
Language of the talk: English
