Tags: Chemical Compound, Chemical Substance.

Samarium(II) iodide (SmI2 also known as Kagan’s reagent) is a green solid composed of samarium and iodine with a melting point of 520 °C where the samarium atom has a coordination number of seven in a capped octahedral configuration. It can be formed by high temperature decomposition of Samarium(III) iodide (SmI3) the more stable iodide. A convenient lab preparation is to react Sm powder with diiodoethane (ICH2CH2I) in anhydrous THF or diiodomethane (CH2I2) may also be used.

Diiodopenta(THF)samarium(II)-3D-balls.png

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