Samarium(II) chloride
Samarium(II) chloride (SmCl) is a chemical compound, used as a radical generating agent in the ketone-mediated intraannulation reaction. Preparation. Reduction of samarium(III) chloride with samarium metal in a vacuum at a temperature of 800 °C to 900 °C, or with hydrogen gas at 350 °C yields samarium(II) chloride: Samarium(II) chloride can also be prepared by reducing samarium(III) chloride with lithium metal/naphthalene in THF: A similar reaction has been observed with sodium. Structure. Samarium(II) chloride adopts the PbCl (cotunnite) structure.