Abstract
The first sterically controlled oxidation of mesoionic selone using copper(II) salt was demonstrated. The present methodology gave access to a rare tetraselenide from dimerized diselenides through chalcogen bonding (ChB). Besides, a similar approach with sterically less crowded mesoionic triazole selone, 1‐(2‐mesitylene)‐3‐methyl‐4‐phenyltriazolin‐5‐selone, gave the classic diselenide salt. In the solid state, these new selenide salts demonstrate a unique structural aggregation with unusual bonding features such as Se···O and Se···F interactions.
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