ELFT HÍRADÓ

[Szeminárium koordinátor <szfi-seminar AT wigner.mta.hu>]

SZFI Seminar
Midori Akiyama
(Kyoto University, Japan, host: Kováts Éva)
The Molecule of the Year 2022: Synthesis and Properties of Perfluorocubane
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.Join Zoom 
Meetinghttps://wigner-hu.zoom.us/j/89821422020?pwd=UHQyNFF3TGZZUXBGbDhmMHRPYmJPQT09Meeting
 ID: 898 2142 2020Passcode: 302754Monday, 12 June 2023, 10:00
Wigner FK SZFI, Bldg. 1, 2nd floor auditorium
Language of the talk: English
All interested are welcome!
Attila Nagyszfi-seminar AT wigner.hu