Speaker: Prof. Javier Mateos
Institute of Organic Chemistry, University of Vienna,
Vienna 1090, Austria
Title: "A Fascination for Bench-Stable Salts – from Nitrate
Reduction to Se(III) Reagents."
Day and Date: Wednesday, February 18, 2026
Time: 16.00 Hrs.
Venue: Room no. 350, Chemistry Department
Second floor, Annex
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Hosted by Prof. Debabrata Maiti
Abstract This talk will provide an overview of the research carried out in our laboratory at the University of Vienna, moving from personal scientific fascinations[1] to the state of the art in organic chemistry, with particular emphasis on our group’s first publication.[2]
Bench-stable salts are compounds that can be stored and handled without decomposition or unwanted reactivity – common examples include household sodium chloride. Their ease of use, affordability, and versatility make them central to chemical practice. In contrast, radicals – species with unpaired electrons – are typically transient and highly reactive, which complicates their use in synthesis and catalysis. For this reason, isolable radicals that remain stable under ambient conditions are especially valuable.
We have recently developed cationic selenuranes as bench-stable reservoirs of selenium radical cations, a class reagents that remains scarcely explored in organic chemistry.[3] These compounds can be prepared and isolated on multigram scale and exhibit remarkable stability. Under ambient conditions they can be stored for more than one month without requiring an inert atmosphere. A distinctive feature is their reversible head-to-head dimerization, which allows controlled Se(III) radical release in solution. Their reactivity spans oxidation and substitution chemistry with hydrazines, alcohols, sulfinates, borates, silanes, and stannanes, including applications to structurally complex substrates.