Carbonyl selenide is a chemical compound with the chemical formula . It is a linear molecule that is primarily of interest for research purposes.
Carbonyl selenide is a colorless gas with an unpleasant odor. Although the compound is quite stable, its solutions gradually revert to elemental selenium and carbon monoxide.[1]
Carbonyl selenide can be produced by treating selenium with carbon monoxide in the presence of amines.
It is used in organoselenium chemistry as a means of incorporating selenium into organic compounds, e.g. for the preparation of selenocarbamates (O-selenocarbamates and Se-selenocarbamates,, where R is organyl and R' and R" are any group, typically H or organyl).[2]