ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT szfki.hu>]

SZFI SeminarMidori AkiyamaKyoto University, Japan (host: Kováts Éva)The 
Molecule of the Year 2022: Synthesis and Properties of PerfluorocubaneMonday, 
12 June 2023, 10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference 
RoomFluorinated 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. Minden érdeklődőt szívesen látunk! - Everyone is 
welcome to attend.Attila Nagysem-admin AT szfki.hu