Samarium(III) phosphide

"Samarium phosphide" redirects here. For the pentaphosphide, see Samarium pentaphosphide.

Samarium(III) phosphide is an inorganic compound of samarium and phosphorus with the chemical formula SmP.^[1][2][3]

Samarium(III) phosphide

Names
Other names Phosphanylidynesamarium, samarium monophosphide
Identifiers
CAS Number	12066-50-1
3D model (JSmol)	Interactive image
ECHA InfoCard	100.031.869
EC Number	235-069-8
PubChem CID	82905
CompTox Dashboard (EPA)	DTXSID601313202
InChI InChI=1S/P.Sm Key: QRVXKVFNBYFEOG-UHFFFAOYSA-N
SMILES P#[Sm]
Properties
Chemical formula	PSm
Molar mass	181.3
Appearance	Crystals
Density	6.3 g/cm3
Solubility in water	Insoluble
Structure
Crystal structure	Cubic
Related compounds
Other anions	Samarium nitride Samarium arsenide Samarium antimonide Samarium bismuthide
Other cations	Neodymium phosphide Europium phosphide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Samarium(III) phosphide can be obtained by heating samarium and phosphorus:

4 Sm + P₄ → 4 SmP

Physical properties

Samarium(III) phosphide forms crystals of a cubic system, space group Fm3m, cell size a = 0.5760 nm, Z = 4, with a structure similar to sodium chloride NaCl.^[4]

The compound exists in the temperature range of 1315–2020 °C and has a homogeneity region described by the SmP_1÷0.982.^[5]

Chemical properties

Samarium(III) phosphide readily dissolves in nitric acid.^[6]

Uses

Samarium(III) phosphide compound is a semiconductor used in high power, high frequency applications and in laser diodes.^[1]