13813-25-7

Basic information

• Product Name: SAMARIUM(III) IODIDE
• Synonyms: Samariumiodide(SmI3);Samariumtriiodide;SAMARIUM(III) IODIDE;SAMARIUM(III) IODIDE, ANHYDROUS, POWDER, 99.9+%;SAMARIUM(III) IODIDE ANHYDROUS POWDER;Samarium(III)iodideanhydrous;Samarium(Ⅲ)iodide;Samarium(III) triiodide
• CAS NO: 13813-25-7
• Molecular Formula: I₃Sm
• Molecular Weight: 531.07
• EINECS: 237-468-2
• Product Categories: Catalysis and Inorganic Chemistry;Chemical Synthesis;Salts;Samarium Salts;SamariumMetal and Ceramic Science
• Mol File: 13813-25-7.mol
• Article Data: 9

Chemical Properties

• Melting Point: 850°C
• Boiling Point: 127°Cat760mmHg
• Flash Point: °C
• Appearance: /powder
• Density: g/cm³
• CAS DataBase Reference: SAMARIUM(III) IODIDE(CAS DataBase Reference)
• NIST Chemistry Reference: SAMARIUM(III) IODIDE(13813-25-7)
• EPA Substance Registry System: SAMARIUM(III) IODIDE(13813-25-7)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• Hazardous Substances Data: 13813-25-7(Hazardous Substances Data)

Usage

General Description

Samarium(III) iodide is a chemical compound with the formula SmI3. It is a rare earth metal halide that is typically found as a green solid, and is highly reactive and air-sensitive. Samarium(III) iodide is commonly used in organic synthesis as a source of the Sm(II) reductant, which is a powerful and selective reducing agent. It is also used in the production of a variety of other organometallic compounds and in catalytic applications. The compound has been found to be effective in asymmetric synthesis processes and has also been studied for its potential applications in the field of medicinal chemistry. However, it is important to handle samarium(III) iodide with caution due to its reactivity and toxicity.

InChI:InChI=1/3HI.Sm/h3*1H;/q;;;+2/p-3

Upstream product

• 7784-23-8 aluminium(III) iodide 
• 7440-19-9 samarium 
• 624-73-7 1,2-Diiodoethane 
• 32248-43-4 samarium diiodide 
• 13470-22-9 uranium tetraiodide 
• 7553-56-2 iodine 
• 10034-85-2 hydrogen iodide 

Downstream Products

• 32248-43-4 samarium diiodide 
• 163087-01-2 [Sm(C₁₇H₁₆N₄O₃)2I₂]⁽¹⁺⁾*I^(1-) = [Sm(C₁₇H₁₆N₄O₃)2I₂]I 
• 1344710-88-8 [(2,5-bis(N-(2,6-diisopropylphenyl)iminomethyl)pyrrolyl)SmI₂(thf)]2 
• 242489-94-7 Sm(C₆H₅N₂C₃(CH₃)2(CHO)O)4I₂⁽¹⁺⁾*I^(1-)=[Sm(C₆H₅N₂C₃(CH₃)2(CHO)O)4I₂]I 

Relevant articles and documents

Autocatalysis and surface catalysis in the reduction of imines by SmI 2

The reduction of the three imines, N-benzylidene aniline (BAI), N-benzylidenemethylamine (BMI), and benzophenone imine (BPI), with SmI 2 gives the reduced as well as coupled products. The reactions were found to be autocatalytic due to the formation of the trivalent samarium in the course of the reaction. When preprepared SmI3 was added to the reaction mixture, the reaction rate increased significantly. However, the kinetics were found to be of zero order in SmI2. This type of behavior is typical of surface catalysis with saturation of the catalytic sites. Although no solids are visible to the naked eye, the existence of microcrystals was proven by light microscopy as well as by dynamic light scattering analysis. Although HRTEM shows the existence of quantum dots in the solid, we were unable to make a direct connection between the existence of the quantum dots and the catalytic phenomenon. In the uncatalyzed reaction, the order of reactivity is BPI > BMI > BAI. This order does not conform to the electron affinity order of the substrates but rather to the nitrogen lone pair accessibility for complexation. This conclusion was further supported by using HMPA as a diagnostic probe for the existence of an inner sphere electron transfer reaction.

Reinvestigation of the Reaction of Samarium Metal with Mercury(II) Iodide

Samarium(II) iodide is obtained from reaction of mercury(II) iodide with an excess of samarium metal in boiling tetrahydrofuran.The preparation involves formation and reduction of samarium(III) iodide and is affected by the quality of the samarium metal.

Thermal constants of melting of samarium(III) iodide

SmI3 samples were prepared by iodination of metal samarium with iodine vapor and identified by chemical analyses and X-ray powder diffraction. The melting point (Tm(SmI3) = 1145 ± 9 K) and the enthalpy of melting (ΔmH°(SmI3) = 25.9 ± 2.5 kJ/mol) were determined. The entropy of melting ΔmS° (SmI3) was calculated to be 22.6 ± 3 J/(mol K).

Rare earth iodide complexes of 4-formyl-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one

Rare earth complexes of 4-formyl-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one (FDPP) having the general formula [Ln(FDPP)4I2]I, where Ln = Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho and Er, have been synthesised and characterised by elemental analyses, molar conductance in non-aqueous solvents, electronic, infrared and proton NMR spectra as well as thermogravimetric analyses. FDPP acts as a neutral monodentate ligand coordinating through the ring carbonyl oxygen. Two of the iodide ions are coordinated. A coordination number of six may be assigned to the metal ion in these complexes. The covalency parameters evaluated from the solid state electronic spectra suggest weak covalent character of the metal-ligand bond. The TG data of the lanthanum complex indicate that the complex is stable up to about 140° C and undergoes decomposition in three stages forming lanthanum oxide as the final product.