Samarium(III) antimonide

Samarium antimonide is a binary inorganic compound of samarium and antimony with the formula SmSb. It forms crystals.

Samarium(III) antimonide

Names
Other names Samarium(III) antimony Antimony-Samarium
Identifiers
CAS Number	29664-84-4
3D model (JSmol)	Interactive image
ChemSpider	109171
ECHA InfoCard	100.045.224
EC Number	249-762-8
PubChem CID	122445
CompTox Dashboard (EPA)	DTXSID8067494
InChI InChI=1S/Sb.Sm Key: JQVBLEDYHQAMKN-UHFFFAOYSA-N
SMILES [Sb].[Sm]
Properties
Chemical formula	PrSb
Molar mass	272.12 g/mol
Density	7.3 g/cm3
Melting point	1922 °C
Related compounds
Other anions	SmN, SmP, SmAs, SmBi, Sm2O3
Other cations	PrSb, NdSb
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

Samarium antimonide can be prepared by heating samarium and antimony in a vacuum:

${\mathsf {Sm+Sb\ {\xrightarrow {1922^{o}C}}\ SmSb}}$

Physical properties

Samarium antimonide forms cubic crystals, space group Fm3m, cell parameters a = 0.6271 nm, Z = 4, and structure like sodium chloride.

The compound melts congruently at a temperature of ≈2000 °C or 1922 °C.