Used as a reagent in organic synthesis, particularly in the introduction of selenium functionality to molecules. Acts as a catalyst or precursor in the preparation of organoselenium compounds, which are valuable in pharmaceutical and agrochemical research. Employed in radical reactions where it serves as a source of selenium-centered radicals, enabling carbon–carbon and carbon–heteroatom bond formation. Also utilized in the development of functional materials and in studies exploring the role of selenium in biological systems due to its redox-active properties.