Jack Jack will use his powers to turn into Samarium Iodide and Reduce the Halogen!

Samarium (II) iodide (SmI2), also known as Kagan’s reagent, is a mild one-electron reducing agent that is often used in the reduction of various classes of organic molecules.  This reagent is used to reduce a wide variety of molecules, but more commonly used in the reduction of organic halides and α-functionalized carbonyl compounds. Reactions with SmI2 occur through electron transfer with the reactant, followed by proton transfer from a protic solvent. This causes mechanisms containing SmI2 to contain radical intermediates as well.

Reduction of an Organic Halide using SmI2

Reduction of a α-Functionalized Carbonyl

In the preparation of SmI2, samarium metal reacts with either diiodomethane or diiodoethane to produce SmI2. However, diiodomethane is preferred because it is a liquid. Pure SmI2 is air sensitive but in solution it can be manipulated without special precautions because it reacts very slowly with water and alcohol.