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Synthesis

Samarium(III) iodide is prepared by the reaction of metallic samarium and iodine:³

Properties

Samarium(III) iodide is a yellow powder that is unstable in air and decomposes in water (hydrolysis).⁴ When heated with metallic samarium, it forms samarium diiodide:⁵

Reduction by hydrogen also affords samarium diiodide upon heating:

Applications

The compound is commercially available and used in organic reactions as a catalyst.⁶

References

1. Zhang, Yuanmin (6 November 2011). "Samarium Triiodide". Synlett. 2011 (11): 1638–1639. doi:10.1055/s-0030-1260781. https://doi.org/10.1055%2Fs-0030-1260781 ↩

2. "Samarium(III) Iodide". American Elements. American Elements. Retrieved 8 August 2021. https://www.americanelements.com/samarium-iii-iodide-13813-25-7 ↩

3. Molodkin, A. K.; Karagodina, A. M.; Tupolev, V. S.; Dudareva, A. G.; Prokhina, A. G. (1984). "Iodination of samarium and reaction of samarium triiodide with lithium iodide". Zhurnal Neorganicheskoj Khimii (in Russian). 29 (4): 1069–1072. ISSN 0044-457X. Retrieved 8 August 2021. https://inis.iaea.org/search/search.aspx?orig_q=RN:16037389 ↩

4. Zhang, Yuanmin (6 November 2011). "Samarium Triiodide". Synlett. 2011 (11): 1638–1639. doi:10.1055/s-0030-1260781. https://doi.org/10.1055%2Fs-0030-1260781 ↩

5. Imamoto, Tsuneo; Ono, Mitsumasa (5 March 1987). "The Reaction of Samarium(III) Iodide with Samarium Metal in Tetrahydrofuran, A New Method for the Preparation of Samarium(II) Iodide". Chemistry Letters. 16 (3): 501–502. doi:10.1246/cl.1987.501. ISSN 0366-7022. https://doi.org/10.1246%2Fcl.1987.501 ↩

6. Zhang, Yuanmin (6 November 2011). "Samarium Triiodide". Synlett. 2011 (11): 1638–1639. doi:10.1055/s-0030-1260781. https://doi.org/10.1055%2Fs-0030-1260781 ↩