Samarium

CAS

7440-19-9

Catalog Number

ACM7440199-1

Category

Nanoparticles & Nanopowders

Molecular Weight

150.36g/mol

Molecular Formula

Sm;

MSDS COA Spec Sheet

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Specification

Synonyms

Samarium rod, 12.7mm (0.5in) dia; Samarium ingot, 3N; Samarium pieces, 12mm (0.47in) & down; Samarium powder; EINECS 231-128-7; AKOS024438061; Samarium foil, 1.0mm (0.04in) thick; Samarium hydride, 99.9%, - 325 mesh SmH2 -3, Hydrogen level may vary; samarium atom; TRA0016065;

IUPAC Name

samarium;

Canonical SMILES

[Sm];

InChI

InChI=1S/Sm;

InChI Key

KZUNJOHGWZRPMI-UHFFFAOYSA-N;

Melting Point

1072 deg C;

Density

7.52 g cu cm at 25 deg C;

Application

Samarium is easy to magnetize, but very difficult to demagnetize. This makes it ideal forthe manufacture of permanent magnets (SmCo5) that are part of the hard disks for computers.Samarium is also used as a neutron absorber in nuclear reactors, as well as for lasers andmetallurgical research. It makes up about 1% of the metals in misch metal, an alloy in cigarettelighter flints. It is also one of several rare-earths used in floodlights and carbon-arc lights usedby the motion picture industry. Samarium is used as a catalyst in several industries, includingthe dehydrogenation of ethanol alcohol.

Storage

water-free area

Color/Form

Silvery metal; rhombohedral;

Covalently-Bonded Unit Count

EC Number

231-128-7

Exact Mass

151.92g/mol

Heavy Atom Count

Monoisotopic Mass

151.92g/mol

Other Experimental

Samarium has high thermal neutron capture cross section ... has a low rate of burn off when used in control rods or in ceramics for radiation protection;Reasonably stable in air;Three crystal modifications of the metal exit, eith transformations at 734 and 922 deg C;Ignites in air at 150 deg C;Specific heat capacity at 298 K, J-mol/K: 29.6; linear coefficient of expansion, 10-6/K: 10.4; thermal conductivity W/cm/K: 0.133; Vickers hardness: 45; Modulus of elasticity, 10+10 N/sq m: 5.75; Shear modulus, 10+10 N/sq m:1.26;Poisson's ratio: 0.352; Grueneisen constant for temperature dependence of electrical resistivity: 0.63; Electrical resistivity, microohlm/cm: 94; Electrion emission, eV: 2.7-2.8; crystal structure of stable phase at room temperature; Lattice constants, nm: 0.3621 (a); 2.625 (c); Distillation rate: 83 g-sq cm/hr at 1.3X10-3 bar;33 isotopes and isomers of samarium ... natural samarium is a mixture of seven isotopes, three of which are unstable but have long half-lives;Samarium-147 and -148 are naturally occurring and stable. Samarium-129 through -143 and samarium-155 through -162 are artificially produced and are radioactive.;

Lanthanides /such as samarium/ are thermodynamically defined as hard Lewis acids (weak electron acceptors);

Topological Polar Surface Area

0A^2

UNII

42OD65L39F

Vapor Pressure

1.3X10-5 bar at 722 mm Hg; 1.3X10-3 bar at 964 mm Hg;

Samarium Powder Used in The Catalytic Synthesis of Benzonitrile Derivatives

Moghaddam, Firouz Matloubi, et al. ChemistrySelect, 2019, 4(33), 9618-9621.

In the absence of any ligands and precious transition metals, samarium (Sm) powder can effectively catalyze the cyanation reaction of aryl halides with electron-withdrawing and electron-releasing substituents in the presence of NaCN, and obtain benzonitriles in high yields. For example, coupling in DMSO provided the corresponding coupling products in good yields.
Characteristics of Sm catalytic system
· Conducting the cyanation reaction without using any ligands and co-catalysts.
· Having simple procedure in the absence of any additives.
· Providing corresponding coupling products in good yields.
· Being practicable for aryl iodides, bromides and also less reactive aryl chlorides.

April 6, 2023

Good in improvement of anatase electronic properties
The doping of Sm improves the performance of dye-sensitized solar cells very well

What is the PubChem CID for samarium?

The PubChem CID for samarium is 23951.

What is the molecular formula of samarium?

The molecular formula of samarium is Sm.

What is the molecular weight of samarium?

The molecular weight of samarium is 150.4 g/mol.

What is the IUPAC name of samarium?

The IUPAC name of samarium is samarium.

What is the InChI of samarium?

The InChI of samarium is InChI=1S/Sm.