Flash Communication: Isolable Stibinidene Chalcogenide Radical Anions

The chemistry of antimony-based radicals remains significantly
less developed in comparison to that of phosphorus radicals. Herein
we report the synthesis and characterization of radical anions derived
from stibinidene sulfide and selenide via one-electron reduction.
Electron paramagnetic resonance spectroscopy combined with density
functional theory calculations revealed that the unpaired electron
predominantly occupies the π* antibonding orbitals of the SbS
and SbSe double bonds with notable localization on the antimony
center.