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.
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Li et al. (2025) studied this question.
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