SAMARIUM(II) IODIDE
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SAMARIUM(II) IODIDE ??
- ???
- 526 ±3°
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- solid: 1580℃ [CRC10]
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- 0.922 g/mL at 25 °C
- ???
- −2 °F
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- 2-8°C
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- reacts with H2O
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- Air & Moisture Sensitive
- Merck
- 14,8349
- InChI
- InChI=1S/2HI.Sm/h2*1H;/q;;+2/p-2
- InChIKey
- UAWABSHMGXMCRK-UHFFFAOYSA-L
- SMILES
- [Sm](I)I
- CAS ??????
- 32248-43-4(CAS DataBase Reference)
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- ?? ? ???? ?? (GHS)
| ??? ?? | F,Xi,Xn | ||
|---|---|---|---|
| ?? ???? ?? | 11-19-36/37-40 | ||
| ????? | 16-29-33-36/37-26 | ||
| ????(UN No.) | UN 2056 3/PG 2 | ||
| WGK ?? | 3 | ||
| F ?????? | 1-10 | ||
| ?? ?? | 3 | ||
| ???? | II | ||
| HS ?? | 28276000 | ||
| ???? ??? | 11 - Combustible Solids |
SAMARIUM(II) IODIDE C??? ??, ??, ??
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Samarium(II) iodide, SmI2, when employed as a solution for organic synthesis, is known as “Kagan’s reagent.” SmI2 is a green solid and its solutions are green as well. It is a strong one-electron reducing agent that is used in organic synthesis. Solid, solvent-free SmI2 forms by high-temperature decomposition of samarium(III) iodide (SmI3).??? ??
Deep bleu-green solution??
Samarium(II) iodide solution (SmI2) can be used as a reagent in the synthesis of:- Benzannulated pyrrolizidines and indolizidines by SmI2-induced cyclizations of indole derivatives.
- Chiral 4-substituted 2-oxazolidinones and 5,5-disubstituted oxazolidinones through asymmetric Reformatsky type reaction.
- γ-Aminoalkyl substituted γ-butyrolactones via ketyl-alkene coupling reaction.
It can also be used in:
- Reduction of conjugated double and triple bonds into alkenes using SmI2/H2O/amine mixtures.
- Conversion of β-hydroxyketones into 1,3-diols by SmI2/H2O/Et3N.
- Selective reduction of 6-membered lactones to the corresponding diols/triols using SmI2-H2O reagent system.
SmI2 is an effective single-electron reducing agent for the promotion of ketone-olefin, ketyl aryl cyclizations, and pinacol coupling reactions under mild conditions. Often both intramolecular and intermolecular couplings proceed in a highly stereoselective fashion. It is also used in the synthesis of new heteroleptic samarium aryloxide/cyclopentadienide complexes.
Purification Methods
A possible impurity is SmI3 from which it is made. If present, grind the solid to a powder and heat it in a stream of pure H2. The temperature (~ 500-600o) should be below the m (~ 628o) of SmI3, since the molten compounds react very slowly. [Wetzel in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II pp 1149, 1150 1965.]SAMARIUM(II) IODIDE ?? ?? ? ???
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SAMARIUM(II) IODIDE ?? ??
???( 168)?? ??
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SAMARIUM(II) IODIDE ?? ??:
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DL-Dithiothreitol
Sodium iodide
BISMUTH POTASSIUM IODIDE
Potassium iodide
Lead(II) iodide
SAMARIUM TRIFLUOROACETYLACETONATE
Samarium trifluoride
SAMARIUM(III) ISOPROPOXIDE
SAMARIUM NITRATE HEXAHYDRATE
TRIS(CYCLOPENTADIENYL)SAMARIUM
SAMARIUM SULFATE
SAMARIUM OXALATE
TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)SAMARIUM(III)