Selenium oxydichloride

Selenium oxydichloride is the inorganic compound with the formula SeOCl2.

Structurally, it is a close chemical relative of thionyl chloride SOCl2, being a pyramidal molecule.

Pure selenium oxydichloride autoionizes to a dimer:[4] The SeOCl2 is generally a labile Lewis acid and solutions of sulfur trioxide in SeOCl2 likely form [SeOCl]+[SO3Cl]− the same way.

[5] The compound hydrolyzes readily to form hydrogen chloride and selenium dioxide,[citation needed] and very few organic compounds dissolve in it without reaction.

At elevated temperatures, it is a strong oxidizer, yielding a chloride, selenium dioxide, and diselenium dichloride.

Structure of the selenium oxydichloride molecule
Structure of the selenium oxydichloride molecule
3D model of the selenium oxydichloride molecule
3D model of the selenium oxydichloride molecule
NFPA 704 four-colored diamond Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas Flammability 0: Will not burn. E.g. water Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium Special hazards (white): no code