Phosphorus triiodide is an inorganic compound with the formula PI₃. A red solid, it is a common misconception that PI₃ is too unstable to be stored; it is, in fact, commercially available. It is widely used in organic chemistry for converting alcohols to alkyl iodides. It is also a powerful reducing agent.

What type of bond is phosphorus triiodide?

Phosphorus triiodide is formed from the covalent bonding of phosphorus to three iodine atoms, hence, the name triiodide.

What is the chemical formula for phosphorus disulfide?

Phosphorus sulfide (P2S3)